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MIT License
Copyright (c) 2026 CCBD SEO Contributors
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
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{"version":3,"sources":["../src/index.ts","../src/checks/title.ts","../src/checks/meta-description.ts","../src/checks/keyphrase-usage.ts","../src/checks/headings.ts","../src/checks/word-count.ts","../src/checks/images.ts","../src/checks/links.ts","../src/analyzer.ts"],"sourcesContent":["// ============================================================================\n// @power-seo/content-analysis — Public API\n// ============================================================================\n\nexport { analyzeContent } from './analyzer.js';\nexport { checkTitle } from './checks/title.js';\nexport { checkMetaDescription } from './checks/meta-description.js';\nexport { checkKeyphraseUsage } from './checks/keyphrase-usage.js';\nexport { checkHeadings } from './checks/headings.js';\nexport { checkWordCount } from './checks/word-count.js';\nexport { checkImages } from './checks/images.js';\nexport { checkLinks } from './checks/links.js';\n\nexport type {\n CheckId,\n AnalysisConfig,\n ContentAnalysisInput,\n ContentAnalysisOutput,\n AnalysisResult,\n AnalysisStatus,\n} from './types.js';\n","// ============================================================================\n// @power-seo/content-analysis — Title Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { validateTitle } from '@power-seo/core';\n\nexport function checkTitle(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { title, focusKeyphrase } = input;\n\n // --- Presence & validity check ---\n if (!title || title.trim().length === 0) {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: 'No title has been set. Add a title to improve search visibility.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n return results;\n }\n\n const validation = validateTitle(title);\n\n if (!validation.valid) {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else if (validation.severity === 'warning') {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: validation.message,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n // --- Keyphrase in title check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const titleLower = title.toLowerCase();\n\n if (titleLower.includes(kp)) {\n results.push({\n id: 'title-keyphrase',\n title: 'Keyphrase in title',\n description: 'The focus keyphrase appears in the SEO title. Good job!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'title-keyphrase',\n title: 'Keyphrase in title',\n description:\n 'The focus keyphrase does not appear in the SEO title. Add it to improve relevance.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// ============================================================================\n// @power-seo/content-analysis — Meta Description Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { validateMetaDescription } from '@power-seo/core';\n\nexport function checkMetaDescription(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { metaDescription, focusKeyphrase } = input;\n\n // --- Presence & validity check ---\n if (!metaDescription || metaDescription.trim().length === 0) {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description:\n 'No meta description has been set. Add one to control how your page appears in search results.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n return results;\n }\n\n const validation = validateMetaDescription(metaDescription);\n\n if (!validation.valid) {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else if (validation.severity === 'warning') {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n // --- Keyphrase in meta description check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const descLower = metaDescription.toLowerCase();\n\n if (descLower.includes(kp)) {\n results.push({\n id: 'meta-description-keyphrase',\n title: 'Keyphrase in meta description',\n description: 'The focus keyphrase appears in the meta description. Well done!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'meta-description-keyphrase',\n title: 'Keyphrase in meta description',\n description:\n 'The focus keyphrase does not appear in the meta description. Add it to improve click-through rate.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// ============================================================================\n// @power-seo/content-analysis — Keyphrase Usage Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport {\n analyzeKeyphraseOccurrences,\n calculateKeywordDensity,\n KEYWORD_DENSITY,\n} from '@power-seo/core';\n\nexport function checkKeyphraseUsage(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { focusKeyphrase, title, metaDescription, content, slug, images } = input;\n\n if (!focusKeyphrase || focusKeyphrase.trim().length === 0) {\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: 'No focus keyphrase set. Set one to get keyphrase analysis.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n return results;\n }\n\n const occurrences = analyzeKeyphraseOccurrences({\n keyphrase: focusKeyphrase,\n title,\n metaDescription,\n content,\n slug,\n images,\n });\n\n const densityResult = calculateKeywordDensity(focusKeyphrase, content);\n\n // --- Density check ---\n if (densityResult.density < KEYWORD_DENSITY.MIN) {\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: `Keyphrase density is ${densityResult.density}%, which is below the recommended minimum of ${KEYWORD_DENSITY.MIN}%. Use the keyphrase more often.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n });\n } else if (densityResult.density > KEYWORD_DENSITY.MAX) {\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: `Keyphrase density is ${densityResult.density}%, which exceeds the recommended maximum of ${KEYWORD_DENSITY.MAX}%. Reduce usage to avoid keyword stuffing.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n });\n } else if (\n densityResult.density >= KEYWORD_DENSITY.MIN &&\n densityResult.density <= KEYWORD_DENSITY.MAX\n ) {\n const isOptimal = Math.abs(densityResult.density - KEYWORD_DENSITY.OPTIMAL) < 0.5;\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: `Keyphrase density is ${densityResult.density}%.${isOptimal ? ' Great — this is close to the optimal density.' : ' This is within the recommended range.'}`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n // --- Distribution check ---\n const distributionPoints: string[] = [];\n if (!occurrences.inFirstParagraph) distributionPoints.push('introduction');\n if (!occurrences.inH1 && occurrences.inHeadings === 0) distributionPoints.push('headings');\n if (!occurrences.inSlug) distributionPoints.push('slug');\n if (occurrences.inAltText === 0 && images && images.length > 0)\n distributionPoints.push('image alt text');\n\n if (distributionPoints.length === 0) {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description:\n 'The focus keyphrase is well-distributed across the introduction, headings, slug, and image alt text.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else if (distributionPoints.length <= 2) {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description: `Consider adding the keyphrase to: ${distributionPoints.join(', ')}.`,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description: `The keyphrase is missing from: ${distributionPoints.join(', ')}. Distribute it more broadly.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n });\n }\n\n return results;\n}\n","// ============================================================================\n// @power-seo/content-analysis — Headings Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { stripHtml } from '@power-seo/core';\n\ninterface HeadingInfo {\n level: number;\n text: string;\n}\n\n/**\n * Parse all headings (h1-h6) from HTML using plain string search.\n * Avoids regex ReDoS on crafted inputs with many repeated heading-like tags.\n */\nfunction parseHeadings(html: string): HeadingInfo[] {\n const headings: HeadingInfo[] = [];\n const lc = html.toLowerCase();\n let pos = 0;\n\n while (pos < lc.length) {\n // Find the next heading tag of any level\n let earliest = -1;\n let earliestLevel = 0;\n for (let level = 1; level <= 6; level++) {\n const idx = lc.indexOf(`<h${level}`, pos);\n if (idx !== -1 && (earliest === -1 || idx < earliest)) {\n earliest = idx;\n earliestLevel = level;\n }\n }\n if (earliest === -1) break;\n\n const contentStart = lc.indexOf('>', earliest);\n if (contentStart === -1) break;\n\n const closeTag = `</h${earliestLevel}>`;\n const closeIdx = lc.indexOf(closeTag, contentStart + 1);\n if (closeIdx === -1) {\n pos = contentStart + 1;\n continue;\n }\n\n headings.push({\n level: earliestLevel,\n text: stripHtml(html.slice(contentStart + 1, closeIdx)),\n });\n pos = closeIdx + closeTag.length;\n }\n\n return headings;\n}\n\nexport function checkHeadings(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { content, focusKeyphrase } = input;\n const headings = parseHeadings(content);\n\n // --- H1 & structure check ---\n const h1s = headings.filter((h) => h.level === 1);\n\n if (h1s.length === 0) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: 'No H1 heading found. Add exactly one H1 as the main heading of your page.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n } else if (h1s.length > 1) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: `Found ${h1s.length} H1 headings. Use exactly one H1 per page for proper SEO.`,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n // Check heading hierarchy\n let hasSkippedLevel = false;\n for (let i = 1; i < headings.length; i++) {\n const prev = headings[i - 1]!;\n const curr = headings[i]!;\n if (curr.level > prev.level + 1) {\n hasSkippedLevel = true;\n break;\n }\n }\n\n if (hasSkippedLevel) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description:\n 'The heading hierarchy skips levels (e.g., H2 to H4). Use sequential heading levels for better accessibility and SEO.',\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: 'The heading structure looks good with a single H1 and proper hierarchy.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n }\n\n // --- Keyphrase in headings check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const subheadings = headings.filter((h) => h.level >= 2);\n const hasKeyphraseInSubheading = subheadings.some((h) => h.text.toLowerCase().includes(kp));\n\n if (subheadings.length === 0) {\n results.push({\n id: 'heading-keyphrase',\n title: 'Keyphrase in subheadings',\n description:\n 'No subheadings (H2-H6) found. Add subheadings to structure your content and include the focus keyphrase.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n } else if (hasKeyphraseInSubheading) {\n results.push({\n id: 'heading-keyphrase',\n title: 'Keyphrase in subheadings',\n description: 'The focus keyphrase appears in at least one subheading. Nice!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'heading-keyphrase',\n title: 'Keyphrase in subheadings',\n description:\n 'The focus keyphrase does not appear in any subheading. Consider adding it to an H2 or H3.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// ============================================================================\n// @power-seo/content-analysis — Word Count Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { getWords, MIN_WORD_COUNT, RECOMMENDED_WORD_COUNT } from '@power-seo/core';\n\nexport function checkWordCount(input: ContentAnalysisInput): AnalysisResult {\n const words = getWords(input.content);\n const count = words.length;\n\n if (count < MIN_WORD_COUNT) {\n return {\n id: 'word-count',\n title: 'Word count',\n description: `The content is ${count} words, which is below the recommended minimum of ${MIN_WORD_COUNT}. Add more content to improve SEO.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n };\n }\n\n if (count < RECOMMENDED_WORD_COUNT) {\n return {\n id: 'word-count',\n title: 'Word count',\n description: `The content is ${count} words. Consider expanding to at least ${RECOMMENDED_WORD_COUNT} words for more comprehensive coverage.`,\n status: 'ok',\n score: 3,\n maxScore: 5,\n };\n }\n\n return {\n id: 'word-count',\n title: 'Word count',\n description: `The content is ${count} words. Good — this provides enough depth for search engines.`,\n status: 'good',\n score: 5,\n maxScore: 5,\n };\n}\n","// ============================================================================\n// @power-seo/content-analysis — Images Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\n\nexport function checkImages(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { images, focusKeyphrase } = input;\n\n if (!images || images.length === 0) {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description: 'No images found. Consider adding images to make your content more engaging.',\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n return results;\n }\n\n // --- Alt text check ---\n const missingAlt = images.filter((img) => !img.alt || img.alt.trim().length === 0);\n\n if (missingAlt.length === 0) {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description: 'All images have alt text. Great for accessibility and SEO!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else if (missingAlt.length === images.length) {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description:\n 'None of the images have alt text. Add descriptive alt attributes for accessibility and SEO.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description: `${missingAlt.length} of ${images.length} images are missing alt text. Add alt attributes to all images.`,\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n\n // --- Keyphrase in alt text check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const hasKeyphraseInAlt = images.some((img) => img.alt && img.alt.toLowerCase().includes(kp));\n\n if (hasKeyphraseInAlt) {\n results.push({\n id: 'image-keyphrase',\n title: 'Keyphrase in image alt',\n description: 'The focus keyphrase appears in at least one image alt attribute.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'image-keyphrase',\n title: 'Keyphrase in image alt',\n description:\n 'The focus keyphrase does not appear in any image alt attribute. Add it to at least one image.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// ============================================================================\n// @power-seo/content-analysis — Links Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\n\nexport function checkLinks(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { internalLinks, externalLinks } = input;\n\n const hasInternal = internalLinks && internalLinks.length > 0;\n const hasExternal = externalLinks && externalLinks.length > 0;\n\n if (!hasInternal) {\n results.push({\n id: 'internal-links',\n title: 'Internal links',\n description:\n 'No internal links found. Add links to other pages on your site to improve crawlability and distribute link equity.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'internal-links',\n title: 'Internal links',\n description: `Found ${internalLinks!.length} internal link${internalLinks!.length === 1 ? '' : 's'}. Good for site structure and SEO.`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n if (!hasExternal) {\n results.push({\n id: 'external-links',\n title: 'External links',\n description:\n 'No external links found. Consider adding outbound links to authoritative sources to strengthen your content.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'external-links',\n title: 'External links',\n description: `Found ${externalLinks!.length} external link${externalLinks!.length === 1 ? '' : 's'}. Linking to quality sources adds credibility.`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n return results;\n}\n","// ============================================================================\n// @power-seo/content-analysis — Content Analyzer Orchestrator\n// ============================================================================\n\nimport type { ContentAnalysisInput, ContentAnalysisOutput, AnalysisResult } from '@power-seo/core';\nimport type { AnalysisConfig, CheckId } from './types.js';\nimport { checkTitle } from './checks/title.js';\nimport { checkMetaDescription } from './checks/meta-description.js';\nimport { checkKeyphraseUsage } from './checks/keyphrase-usage.js';\nimport { checkHeadings } from './checks/headings.js';\nimport { checkWordCount } from './checks/word-count.js';\nimport { checkImages } from './checks/images.js';\nimport { checkLinks } from './checks/links.js';\n\n/**\n * Run all SEO content analysis checks and return aggregated results.\n *\n * @example\n * ```ts\n * const output = analyzeContent({\n * title: 'My Blog Post',\n * metaDescription: 'A description of my blog post about SEO.',\n * content: '<h1>My Blog Post</h1><p>Content goes here...</p>',\n * focusKeyphrase: 'blog post',\n * });\n * console.log(output.score, output.maxScore, output.recommendations);\n * ```\n */\nexport function analyzeContent(\n input: ContentAnalysisInput,\n config?: AnalysisConfig,\n): ContentAnalysisOutput {\n const disabled = new Set<CheckId>(config?.disabledChecks ?? []);\n\n const allResults: AnalysisResult[] = [];\n\n // Run each check group and collect results\n const titleResults = checkTitle(input);\n const metaResults = checkMetaDescription(input);\n const keyphraseResults = checkKeyphraseUsage(input);\n const headingResults = checkHeadings(input);\n const wordCountResult = checkWordCount(input);\n const imageResults = checkImages(input);\n const linkResults = checkLinks(input);\n\n // Flatten all results\n const candidateResults = [\n ...titleResults,\n ...metaResults,\n ...keyphraseResults,\n ...headingResults,\n wordCountResult,\n ...imageResults,\n ...linkResults,\n ];\n\n // Filter out disabled checks\n for (const result of candidateResults) {\n if (!disabled.has(result.id as CheckId)) {\n allResults.push(result);\n }\n }\n\n // Sum scores\n const score = allResults.reduce((sum, r) => sum + r.score, 0);\n const maxScore = allResults.reduce((sum, r) => sum + r.maxScore, 0);\n\n // Generate recommendations from poor/ok results\n const recommendations = allResults\n .filter((r) => r.status === 'poor' || r.status === 'ok')\n .map((r) => r.description);\n\n return {\n score,\n maxScore,\n results: allResults,\n recommendations,\n 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{"version":3,"sources":["../src/index.ts","../src/checks/title.ts","../src/checks/meta-description.ts","../src/checks/keyphrase-usage.ts","../src/checks/headings.ts","../src/checks/word-count.ts","../src/checks/images.ts","../src/checks/links.ts","../src/analyzer.ts"],"sourcesContent":["// @power-seo/content-analysis — Public API\n// ----------------------------------------------------------------------------\n\nexport { analyzeContent } from './analyzer.js';\nexport { checkTitle } from './checks/title.js';\nexport { checkMetaDescription } from './checks/meta-description.js';\nexport { checkKeyphraseUsage } from './checks/keyphrase-usage.js';\nexport { checkHeadings } from './checks/headings.js';\nexport { checkWordCount } from './checks/word-count.js';\nexport { checkImages } from './checks/images.js';\nexport { checkLinks } from './checks/links.js';\n\nexport type {\n CheckId,\n AnalysisConfig,\n ContentAnalysisInput,\n ContentAnalysisOutput,\n AnalysisResult,\n AnalysisStatus,\n} from './types.js';\n","// @power-seo/content-analysis — Title Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { validateTitle } from '@power-seo/core';\n\nexport function checkTitle(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { title, focusKeyphrase } = input;\n\n // --- Presence & validity check ---\n if (!title || title.trim().length === 0) {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: 'No title has been set. Add a title to improve search visibility.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n return results;\n }\n\n const validation = validateTitle(title);\n\n if (!validation.valid) {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else if (validation.severity === 'warning') {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: validation.message,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n // --- Keyphrase in title check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const titleLower = title.toLowerCase();\n\n if (titleLower.includes(kp)) {\n results.push({\n id: 'title-keyphrase',\n title: 'Keyphrase in title',\n description: 'The focus keyphrase appears in the SEO title. Good job!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'title-keyphrase',\n title: 'Keyphrase in title',\n description:\n 'The focus keyphrase does not appear in the SEO title. Add it to improve relevance.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// @power-seo/content-analysis — Meta Description Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { validateMetaDescription } from '@power-seo/core';\n\nexport function checkMetaDescription(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { metaDescription, focusKeyphrase } = input;\n\n // --- Presence & validity check ---\n if (!metaDescription || metaDescription.trim().length === 0) {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description:\n 'No meta description has been set. Add one to control how your page appears in search results.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n return results;\n }\n\n const validation = validateMetaDescription(metaDescription);\n\n if (!validation.valid) {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else if (validation.severity === 'warning') {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n // --- Keyphrase in meta description check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const descLower = metaDescription.toLowerCase();\n\n if (descLower.includes(kp)) {\n results.push({\n id: 'meta-description-keyphrase',\n title: 'Keyphrase in meta description',\n description: 'The focus keyphrase appears in the meta description. Well done!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'meta-description-keyphrase',\n title: 'Keyphrase in meta description',\n description:\n 'The focus keyphrase does not appear in the meta description. Add it to improve click-through rate.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// @power-seo/content-analysis — Keyphrase Usage Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport {\n analyzeKeyphraseOccurrences,\n calculateKeywordDensity,\n KEYWORD_DENSITY,\n} from '@power-seo/core';\n\nexport function checkKeyphraseUsage(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { focusKeyphrase, title, metaDescription, content, slug, images } = input;\n\n if (!focusKeyphrase || focusKeyphrase.trim().length === 0) {\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: 'No focus keyphrase set. Set one to get keyphrase analysis.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n return results;\n }\n\n const occurrences = analyzeKeyphraseOccurrences({\n keyphrase: focusKeyphrase,\n title,\n metaDescription,\n content,\n slug,\n images,\n });\n\n const densityResult = calculateKeywordDensity(focusKeyphrase, content);\n\n // --- Density check ---\n if (densityResult.density < KEYWORD_DENSITY.MIN) {\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: `Keyphrase density is ${densityResult.density}%, which is below the recommended minimum of ${KEYWORD_DENSITY.MIN}%. Use the keyphrase more often.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n });\n } else if (densityResult.density > KEYWORD_DENSITY.MAX) {\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: `Keyphrase density is ${densityResult.density}%, which exceeds the recommended maximum of ${KEYWORD_DENSITY.MAX}%. Reduce usage to avoid keyword stuffing.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n });\n } else if (\n densityResult.density >= KEYWORD_DENSITY.MIN &&\n densityResult.density <= KEYWORD_DENSITY.MAX\n ) {\n const isOptimal = Math.abs(densityResult.density - KEYWORD_DENSITY.OPTIMAL) < 0.5;\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: `Keyphrase density is ${densityResult.density}%.${isOptimal ? ' Great — this is close to the optimal density.' : ' This is within the recommended range.'}`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n // --- Distribution check ---\n const distributionPoints: string[] = [];\n if (!occurrences.inFirstParagraph) distributionPoints.push('introduction');\n if (!occurrences.inH1 && occurrences.inHeadings === 0) distributionPoints.push('headings');\n if (!occurrences.inSlug) distributionPoints.push('slug');\n if (occurrences.inAltText === 0 && images && images.length > 0)\n distributionPoints.push('image alt text');\n\n if (distributionPoints.length === 0) {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description:\n 'The focus keyphrase is well-distributed across the introduction, headings, slug, and image alt text.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else if (distributionPoints.length <= 2) {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description: `Consider adding the keyphrase to: ${distributionPoints.join(', ')}.`,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description: `The keyphrase is missing from: ${distributionPoints.join(', ')}. Distribute it more broadly.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n });\n }\n\n return results;\n}\n","// @power-seo/content-analysis — Headings Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { stripHtml } from '@power-seo/core';\n\ninterface HeadingInfo {\n level: number;\n text: string;\n}\n\n/**\n * Parse all headings (h1-h6) from HTML using plain string search.\n * Avoids regex ReDoS on crafted inputs with many repeated heading-like tags.\n */\nfunction parseHeadings(html: string): HeadingInfo[] {\n const headings: HeadingInfo[] = [];\n const lc = html.toLowerCase();\n let pos = 0;\n\n while (pos < lc.length) {\n // Find the next heading tag of any level\n let earliest = -1;\n let earliestLevel = 0;\n for (let level = 1; level <= 6; level++) {\n const idx = lc.indexOf(`<h${level}`, pos);\n if (idx !== -1 && (earliest === -1 || idx < earliest)) {\n earliest = idx;\n earliestLevel = level;\n }\n }\n if (earliest === -1) break;\n\n const contentStart = lc.indexOf('>', earliest);\n if (contentStart === -1) break;\n\n const closeTag = `</h${earliestLevel}>`;\n const closeIdx = lc.indexOf(closeTag, contentStart + 1);\n if (closeIdx === -1) {\n pos = contentStart + 1;\n continue;\n }\n\n headings.push({\n level: earliestLevel,\n text: stripHtml(html.slice(contentStart + 1, closeIdx)),\n });\n pos = closeIdx + closeTag.length;\n }\n\n return headings;\n}\n\nexport function checkHeadings(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { content, focusKeyphrase } = input;\n const headings = parseHeadings(content);\n\n // --- H1 & structure check ---\n const h1s = headings.filter((h) => h.level === 1);\n\n if (h1s.length === 0) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: 'No H1 heading found. Add exactly one H1 as the main heading of your page.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n } else if (h1s.length > 1) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: `Found ${h1s.length} H1 headings. Use exactly one H1 per page for proper SEO.`,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n // Check heading hierarchy\n let hasSkippedLevel = false;\n for (let i = 1; i < headings.length; i++) {\n const prev = headings[i - 1]!;\n const curr = headings[i]!;\n if (curr.level > prev.level + 1) {\n hasSkippedLevel = true;\n break;\n }\n }\n\n if (hasSkippedLevel) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description:\n 'The heading hierarchy skips levels (e.g., H2 to H4). Use sequential heading levels for better accessibility and SEO.',\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: 'The heading structure looks good with a single H1 and proper hierarchy.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n }\n\n // --- Keyphrase in headings check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const subheadings = headings.filter((h) => h.level >= 2);\n const hasKeyphraseInSubheading = subheadings.some((h) => h.text.toLowerCase().includes(kp));\n\n if (subheadings.length === 0) {\n results.push({\n id: 'heading-keyphrase',\n title: 'Keyphrase in subheadings',\n description:\n 'No subheadings (H2-H6) found. Add subheadings to structure your content and include the focus keyphrase.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n } else if (hasKeyphraseInSubheading) {\n results.push({\n id: 'heading-keyphrase',\n title: 'Keyphrase in subheadings',\n description: 'The focus keyphrase appears in at least one subheading. Nice!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'heading-keyphrase',\n title: 'Keyphrase in subheadings',\n description:\n 'The focus keyphrase does not appear in any subheading. Consider adding it to an H2 or H3.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// @power-seo/content-analysis — Word Count Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { getWords, MIN_WORD_COUNT, RECOMMENDED_WORD_COUNT } from '@power-seo/core';\n\nexport function checkWordCount(input: ContentAnalysisInput): AnalysisResult {\n const words = getWords(input.content);\n const count = words.length;\n\n if (count < MIN_WORD_COUNT) {\n return {\n id: 'word-count',\n title: 'Word count',\n description: `The content is ${count} words, which is below the recommended minimum of ${MIN_WORD_COUNT}. Add more content to improve SEO.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n };\n }\n\n if (count < RECOMMENDED_WORD_COUNT) {\n return {\n id: 'word-count',\n title: 'Word count',\n description: `The content is ${count} words. Consider expanding to at least ${RECOMMENDED_WORD_COUNT} words for more comprehensive coverage.`,\n status: 'ok',\n score: 3,\n maxScore: 5,\n };\n }\n\n return {\n id: 'word-count',\n title: 'Word count',\n description: `The content is ${count} words. Good — this provides enough depth for search engines.`,\n status: 'good',\n score: 5,\n maxScore: 5,\n };\n}\n","// @power-seo/content-analysis — Images Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\n\nexport function checkImages(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { images, focusKeyphrase } = input;\n\n if (!images || images.length === 0) {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description: 'No images found. Consider adding images to make your content more engaging.',\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n return results;\n }\n\n // --- Alt text check ---\n const missingAlt = images.filter((img) => !img.alt || img.alt.trim().length === 0);\n\n if (missingAlt.length === 0) {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description: 'All images have alt text. Great for accessibility and SEO!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else if (missingAlt.length === images.length) {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description:\n 'None of the images have alt text. Add descriptive alt attributes for accessibility and SEO.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description: `${missingAlt.length} of ${images.length} images are missing alt text. Add alt attributes to all images.`,\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n\n // --- Keyphrase in alt text check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const hasKeyphraseInAlt = images.some((img) => img.alt && img.alt.toLowerCase().includes(kp));\n\n if (hasKeyphraseInAlt) {\n results.push({\n id: 'image-keyphrase',\n title: 'Keyphrase in image alt',\n description: 'The focus keyphrase appears in at least one image alt attribute.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'image-keyphrase',\n title: 'Keyphrase in image alt',\n description:\n 'The focus keyphrase does not appear in any image alt attribute. Add it to at least one image.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// @power-seo/content-analysis — Links Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\n\nexport function checkLinks(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { internalLinks, externalLinks } = input;\n\n const hasInternal = internalLinks && internalLinks.length > 0;\n const hasExternal = externalLinks && externalLinks.length > 0;\n\n if (!hasInternal) {\n results.push({\n id: 'internal-links',\n title: 'Internal links',\n description:\n 'No internal links found. Add links to other pages on your site to improve crawlability and distribute link equity.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'internal-links',\n title: 'Internal links',\n description: `Found ${internalLinks!.length} internal link${internalLinks!.length === 1 ? '' : 's'}. Good for site structure and SEO.`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n if (!hasExternal) {\n results.push({\n id: 'external-links',\n title: 'External links',\n description:\n 'No external links found. Consider adding outbound links to authoritative sources to strengthen your content.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'external-links',\n title: 'External links',\n description: `Found ${externalLinks!.length} external link${externalLinks!.length === 1 ? '' : 's'}. Linking to quality sources adds credibility.`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n return results;\n}\n","// @power-seo/content-analysis — Content Analyzer Orchestrator\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, ContentAnalysisOutput, AnalysisResult } from '@power-seo/core';\nimport type { AnalysisConfig, CheckId } from './types.js';\nimport { checkTitle } from './checks/title.js';\nimport { checkMetaDescription } from './checks/meta-description.js';\nimport { checkKeyphraseUsage } from './checks/keyphrase-usage.js';\nimport { checkHeadings } from './checks/headings.js';\nimport { checkWordCount } from './checks/word-count.js';\nimport { checkImages } from './checks/images.js';\nimport { checkLinks } from './checks/links.js';\n\n/**\n * Run all SEO content analysis checks and return aggregated results.\n *\n * @example\n * ```ts\n * const output = analyzeContent({\n * title: 'My Blog Post',\n * metaDescription: 'A description of my blog post about SEO.',\n * content: '<h1>My Blog Post</h1><p>Content goes here...</p>',\n * focusKeyphrase: 'blog post',\n * });\n * console.log(output.score, output.maxScore, output.recommendations);\n * ```\n */\nexport function analyzeContent(\n input: ContentAnalysisInput,\n config?: AnalysisConfig,\n): ContentAnalysisOutput {\n const disabled = new Set<CheckId>(config?.disabledChecks ?? []);\n\n const allResults: AnalysisResult[] = [];\n\n // Run each check group and collect results\n const titleResults = checkTitle(input);\n const metaResults = checkMetaDescription(input);\n const keyphraseResults = checkKeyphraseUsage(input);\n const headingResults = checkHeadings(input);\n const wordCountResult = checkWordCount(input);\n const imageResults = checkImages(input);\n const linkResults = checkLinks(input);\n\n // Flatten all results\n const candidateResults = [\n ...titleResults,\n ...metaResults,\n ...keyphraseResults,\n ...headingResults,\n wordCountResult,\n ...imageResults,\n ...linkResults,\n ];\n\n // Filter out disabled checks\n for (const result of candidateResults) {\n if (!disabled.has(result.id as CheckId)) {\n allResults.push(result);\n }\n }\n\n // Sum scores\n const score = allResults.reduce((sum, r) => sum + r.score, 0);\n const maxScore = allResults.reduce((sum, r) => sum + r.maxScore, 0);\n\n // Generate recommendations from poor/ok results\n const recommendations = allResults\n .filter((r) => r.status === 'poor' || r.status === 'ok')\n .map((r) => r.description);\n\n return {\n score,\n maxScore,\n results: allResults,\n recommendations,\n 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@@ -1,1 +0,1 @@

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Add a title to improve search visibility.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n return results;\n }\n\n const validation = validateTitle(title);\n\n if (!validation.valid) {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else if (validation.severity === 'warning') {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: validation.message,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n // --- Keyphrase in title check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const titleLower = title.toLowerCase();\n\n if (titleLower.includes(kp)) {\n results.push({\n id: 'title-keyphrase',\n title: 'Keyphrase in title',\n description: 'The focus keyphrase appears in the SEO title. Good job!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'title-keyphrase',\n title: 'Keyphrase in title',\n description:\n 'The focus keyphrase does not appear in the SEO title. Add it to improve relevance.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// ============================================================================\n// @power-seo/content-analysis — Meta Description Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { validateMetaDescription } from '@power-seo/core';\n\nexport function checkMetaDescription(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { metaDescription, focusKeyphrase } = input;\n\n // --- Presence & validity check ---\n if (!metaDescription || metaDescription.trim().length === 0) {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description:\n 'No meta description has been set. Add one to control how your page appears in search results.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n return results;\n }\n\n const validation = validateMetaDescription(metaDescription);\n\n if (!validation.valid) {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else if (validation.severity === 'warning') {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n // --- Keyphrase in meta description check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const descLower = metaDescription.toLowerCase();\n\n if (descLower.includes(kp)) {\n results.push({\n id: 'meta-description-keyphrase',\n title: 'Keyphrase in meta description',\n description: 'The focus keyphrase appears in the meta description. Well done!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'meta-description-keyphrase',\n title: 'Keyphrase in meta description',\n description:\n 'The focus keyphrase does not appear in the meta description. Add it to improve click-through rate.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// ============================================================================\n// @power-seo/content-analysis — Keyphrase Usage Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport {\n analyzeKeyphraseOccurrences,\n calculateKeywordDensity,\n KEYWORD_DENSITY,\n} from '@power-seo/core';\n\nexport function checkKeyphraseUsage(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { focusKeyphrase, title, metaDescription, content, slug, images } = input;\n\n if (!focusKeyphrase || focusKeyphrase.trim().length === 0) {\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: 'No focus keyphrase set. Set one to get keyphrase analysis.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n return results;\n }\n\n const occurrences = analyzeKeyphraseOccurrences({\n keyphrase: focusKeyphrase,\n title,\n metaDescription,\n content,\n slug,\n images,\n });\n\n const densityResult = calculateKeywordDensity(focusKeyphrase, content);\n\n // --- Density check ---\n if (densityResult.density < KEYWORD_DENSITY.MIN) {\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: `Keyphrase density is ${densityResult.density}%, which is below the recommended minimum of ${KEYWORD_DENSITY.MIN}%. Use the keyphrase more often.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n });\n } else if (densityResult.density > KEYWORD_DENSITY.MAX) {\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: `Keyphrase density is ${densityResult.density}%, which exceeds the recommended maximum of ${KEYWORD_DENSITY.MAX}%. Reduce usage to avoid keyword stuffing.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n });\n } else if (\n densityResult.density >= KEYWORD_DENSITY.MIN &&\n densityResult.density <= KEYWORD_DENSITY.MAX\n ) {\n const isOptimal = Math.abs(densityResult.density - KEYWORD_DENSITY.OPTIMAL) < 0.5;\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: `Keyphrase density is ${densityResult.density}%.${isOptimal ? ' Great — this is close to the optimal density.' : ' This is within the recommended range.'}`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n // --- Distribution check ---\n const distributionPoints: string[] = [];\n if (!occurrences.inFirstParagraph) distributionPoints.push('introduction');\n if (!occurrences.inH1 && occurrences.inHeadings === 0) distributionPoints.push('headings');\n if (!occurrences.inSlug) distributionPoints.push('slug');\n if (occurrences.inAltText === 0 && images && images.length > 0)\n distributionPoints.push('image alt text');\n\n if (distributionPoints.length === 0) {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description:\n 'The focus keyphrase is well-distributed across the introduction, headings, slug, and image alt text.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else if (distributionPoints.length <= 2) {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description: `Consider adding the keyphrase to: ${distributionPoints.join(', ')}.`,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description: `The keyphrase is missing from: ${distributionPoints.join(', ')}. Distribute it more broadly.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n });\n }\n\n return results;\n}\n","// ============================================================================\n// @power-seo/content-analysis — Headings Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { stripHtml } from '@power-seo/core';\n\ninterface HeadingInfo {\n level: number;\n text: string;\n}\n\n/**\n * Parse all headings (h1-h6) from HTML using plain string search.\n * Avoids regex ReDoS on crafted inputs with many repeated heading-like tags.\n */\nfunction parseHeadings(html: string): HeadingInfo[] {\n const headings: HeadingInfo[] = [];\n const lc = html.toLowerCase();\n let pos = 0;\n\n while (pos < lc.length) {\n // Find the next heading tag of any level\n let earliest = -1;\n let earliestLevel = 0;\n for (let level = 1; level <= 6; level++) {\n const idx = lc.indexOf(`<h${level}`, pos);\n if (idx !== -1 && (earliest === -1 || idx < earliest)) {\n earliest = idx;\n earliestLevel = level;\n }\n }\n if (earliest === -1) break;\n\n const contentStart = lc.indexOf('>', earliest);\n if (contentStart === -1) break;\n\n const closeTag = `</h${earliestLevel}>`;\n const closeIdx = lc.indexOf(closeTag, contentStart + 1);\n if (closeIdx === -1) {\n pos = contentStart + 1;\n continue;\n }\n\n headings.push({\n level: earliestLevel,\n text: stripHtml(html.slice(contentStart + 1, closeIdx)),\n });\n pos = closeIdx + closeTag.length;\n }\n\n return headings;\n}\n\nexport function checkHeadings(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { content, focusKeyphrase } = input;\n const headings = parseHeadings(content);\n\n // --- H1 & structure check ---\n const h1s = headings.filter((h) => h.level === 1);\n\n if (h1s.length === 0) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: 'No H1 heading found. Add exactly one H1 as the main heading of your page.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n } else if (h1s.length > 1) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: `Found ${h1s.length} H1 headings. Use exactly one H1 per page for proper SEO.`,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n // Check heading hierarchy\n let hasSkippedLevel = false;\n for (let i = 1; i < headings.length; i++) {\n const prev = headings[i - 1]!;\n const curr = headings[i]!;\n if (curr.level > prev.level + 1) {\n hasSkippedLevel = true;\n break;\n }\n }\n\n if (hasSkippedLevel) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description:\n 'The heading hierarchy skips levels (e.g., H2 to H4). Use sequential heading levels for better accessibility and SEO.',\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: 'The heading structure looks good with a single H1 and proper hierarchy.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n }\n\n // --- Keyphrase in headings check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const subheadings = headings.filter((h) => h.level >= 2);\n const hasKeyphraseInSubheading = subheadings.some((h) => h.text.toLowerCase().includes(kp));\n\n if (subheadings.length === 0) {\n results.push({\n id: 'heading-keyphrase',\n title: 'Keyphrase in subheadings',\n description:\n 'No subheadings (H2-H6) found. Add subheadings to structure your content and include the focus keyphrase.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n } else if (hasKeyphraseInSubheading) {\n results.push({\n id: 'heading-keyphrase',\n title: 'Keyphrase in subheadings',\n description: 'The focus keyphrase appears in at least one subheading. Nice!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'heading-keyphrase',\n title: 'Keyphrase in subheadings',\n description:\n 'The focus keyphrase does not appear in any subheading. Consider adding it to an H2 or H3.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// ============================================================================\n// @power-seo/content-analysis — Word Count Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { getWords, MIN_WORD_COUNT, RECOMMENDED_WORD_COUNT } from '@power-seo/core';\n\nexport function checkWordCount(input: ContentAnalysisInput): AnalysisResult {\n const words = getWords(input.content);\n const count = words.length;\n\n if (count < MIN_WORD_COUNT) {\n return {\n id: 'word-count',\n title: 'Word count',\n description: `The content is ${count} words, which is below the recommended minimum of ${MIN_WORD_COUNT}. Add more content to improve SEO.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n };\n }\n\n if (count < RECOMMENDED_WORD_COUNT) {\n return {\n id: 'word-count',\n title: 'Word count',\n description: `The content is ${count} words. Consider expanding to at least ${RECOMMENDED_WORD_COUNT} words for more comprehensive coverage.`,\n status: 'ok',\n score: 3,\n maxScore: 5,\n };\n }\n\n return {\n id: 'word-count',\n title: 'Word count',\n description: `The content is ${count} words. Good — this provides enough depth for search engines.`,\n status: 'good',\n score: 5,\n maxScore: 5,\n };\n}\n","// ============================================================================\n// @power-seo/content-analysis — Images Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\n\nexport function checkImages(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { images, focusKeyphrase } = input;\n\n if (!images || images.length === 0) {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description: 'No images found. Consider adding images to make your content more engaging.',\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n return results;\n }\n\n // --- Alt text check ---\n const missingAlt = images.filter((img) => !img.alt || img.alt.trim().length === 0);\n\n if (missingAlt.length === 0) {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description: 'All images have alt text. Great for accessibility and SEO!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else if (missingAlt.length === images.length) {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description:\n 'None of the images have alt text. Add descriptive alt attributes for accessibility and SEO.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description: `${missingAlt.length} of ${images.length} images are missing alt text. Add alt attributes to all images.`,\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n\n // --- Keyphrase in alt text check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const hasKeyphraseInAlt = images.some((img) => img.alt && img.alt.toLowerCase().includes(kp));\n\n if (hasKeyphraseInAlt) {\n results.push({\n id: 'image-keyphrase',\n title: 'Keyphrase in image alt',\n description: 'The focus keyphrase appears in at least one image alt attribute.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'image-keyphrase',\n title: 'Keyphrase in image alt',\n description:\n 'The focus keyphrase does not appear in any image alt attribute. Add it to at least one image.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// ============================================================================\n// @power-seo/content-analysis — Links Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\n\nexport function checkLinks(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { internalLinks, externalLinks } = input;\n\n const hasInternal = internalLinks && internalLinks.length > 0;\n const hasExternal = externalLinks && externalLinks.length > 0;\n\n if (!hasInternal) {\n results.push({\n id: 'internal-links',\n title: 'Internal links',\n description:\n 'No internal links found. Add links to other pages on your site to improve crawlability and distribute link equity.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'internal-links',\n title: 'Internal links',\n description: `Found ${internalLinks!.length} internal link${internalLinks!.length === 1 ? '' : 's'}. Good for site structure and SEO.`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n if (!hasExternal) {\n results.push({\n id: 'external-links',\n title: 'External links',\n description:\n 'No external links found. Consider adding outbound links to authoritative sources to strengthen your content.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'external-links',\n title: 'External links',\n description: `Found ${externalLinks!.length} external link${externalLinks!.length === 1 ? '' : 's'}. Linking to quality sources adds credibility.`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n return results;\n}\n","// ============================================================================\n// @power-seo/content-analysis — Content Analyzer Orchestrator\n// ============================================================================\n\nimport type { ContentAnalysisInput, ContentAnalysisOutput, AnalysisResult } from '@power-seo/core';\nimport type { AnalysisConfig, CheckId } from './types.js';\nimport { checkTitle } from './checks/title.js';\nimport { checkMetaDescription } from './checks/meta-description.js';\nimport { checkKeyphraseUsage } from './checks/keyphrase-usage.js';\nimport { checkHeadings } from './checks/headings.js';\nimport { checkWordCount } from './checks/word-count.js';\nimport { checkImages } from './checks/images.js';\nimport { checkLinks } from './checks/links.js';\n\n/**\n * Run all SEO content analysis checks and return aggregated results.\n *\n * @example\n * ```ts\n * const output = analyzeContent({\n * title: 'My Blog Post',\n * metaDescription: 'A description of my blog post about SEO.',\n * content: '<h1>My Blog Post</h1><p>Content goes here...</p>',\n * focusKeyphrase: 'blog post',\n * });\n * console.log(output.score, output.maxScore, output.recommendations);\n * ```\n */\nexport function analyzeContent(\n input: ContentAnalysisInput,\n config?: AnalysisConfig,\n): ContentAnalysisOutput {\n const disabled = new Set<CheckId>(config?.disabledChecks ?? []);\n\n const allResults: AnalysisResult[] = [];\n\n // Run each check group and collect results\n const titleResults = checkTitle(input);\n const metaResults = checkMetaDescription(input);\n const keyphraseResults = checkKeyphraseUsage(input);\n const headingResults = checkHeadings(input);\n const wordCountResult = checkWordCount(input);\n const imageResults = checkImages(input);\n const linkResults = checkLinks(input);\n\n // Flatten all results\n const candidateResults = [\n ...titleResults,\n ...metaResults,\n ...keyphraseResults,\n ...headingResults,\n wordCountResult,\n ...imageResults,\n ...linkResults,\n ];\n\n // Filter out disabled checks\n for (const result of candidateResults) {\n if (!disabled.has(result.id as CheckId)) {\n allResults.push(result);\n }\n }\n\n // Sum scores\n const score = allResults.reduce((sum, r) => sum + r.score, 0);\n const maxScore = allResults.reduce((sum, r) => sum + r.maxScore, 0);\n\n // Generate recommendations from poor/ok results\n const recommendations = allResults\n .filter((r) => r.status === 'poor' || r.status === 'ok')\n .map((r) => r.description);\n\n return {\n score,\n maxScore,\n results: allResults,\n recommendations,\n 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{"version":3,"sources":["../src/checks/title.ts","../src/checks/meta-description.ts","../src/checks/keyphrase-usage.ts","../src/checks/headings.ts","../src/checks/word-count.ts","../src/checks/images.ts","../src/checks/links.ts","../src/analyzer.ts"],"sourcesContent":["// @power-seo/content-analysis — Title Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { validateTitle } from '@power-seo/core';\n\nexport function checkTitle(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { title, focusKeyphrase } = input;\n\n // --- Presence & validity check ---\n if (!title || title.trim().length === 0) {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: 'No title has been set. 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Good job!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'title-keyphrase',\n title: 'Keyphrase in title',\n description:\n 'The focus keyphrase does not appear in the SEO title. Add it to improve relevance.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// @power-seo/content-analysis — Meta Description Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { validateMetaDescription } from '@power-seo/core';\n\nexport function checkMetaDescription(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { metaDescription, focusKeyphrase } = input;\n\n // --- Presence & validity check ---\n if (!metaDescription || metaDescription.trim().length === 0) {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description:\n 'No meta description has been set. Add one to control how your page appears in search results.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n return results;\n }\n\n const validation = validateMetaDescription(metaDescription);\n\n if (!validation.valid) {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else if (validation.severity === 'warning') {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n // --- Keyphrase in meta description check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const descLower = metaDescription.toLowerCase();\n\n if (descLower.includes(kp)) {\n results.push({\n id: 'meta-description-keyphrase',\n title: 'Keyphrase in meta description',\n description: 'The focus keyphrase appears in the meta description. Well done!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'meta-description-keyphrase',\n title: 'Keyphrase in meta description',\n description:\n 'The focus keyphrase does not appear in the meta description. Add it to improve click-through rate.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// @power-seo/content-analysis — Keyphrase Usage Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport {\n analyzeKeyphraseOccurrences,\n calculateKeywordDensity,\n KEYWORD_DENSITY,\n} from '@power-seo/core';\n\nexport function checkKeyphraseUsage(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { focusKeyphrase, title, metaDescription, content, slug, images } = input;\n\n if (!focusKeyphrase || focusKeyphrase.trim().length === 0) {\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: 'No focus keyphrase set. Set one to get keyphrase analysis.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n return results;\n }\n\n const occurrences = analyzeKeyphraseOccurrences({\n keyphrase: focusKeyphrase,\n title,\n metaDescription,\n content,\n slug,\n images,\n });\n\n const densityResult = calculateKeywordDensity(focusKeyphrase, content);\n\n // --- Density check ---\n if (densityResult.density < KEYWORD_DENSITY.MIN) {\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: `Keyphrase density is ${densityResult.density}%, which is below the recommended minimum of ${KEYWORD_DENSITY.MIN}%. Use the keyphrase more often.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n });\n } else if (densityResult.density > KEYWORD_DENSITY.MAX) {\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: `Keyphrase density is ${densityResult.density}%, which exceeds the recommended maximum of ${KEYWORD_DENSITY.MAX}%. Reduce usage to avoid keyword stuffing.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n });\n } else if (\n densityResult.density >= KEYWORD_DENSITY.MIN &&\n densityResult.density <= KEYWORD_DENSITY.MAX\n ) {\n const isOptimal = Math.abs(densityResult.density - KEYWORD_DENSITY.OPTIMAL) < 0.5;\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: `Keyphrase density is ${densityResult.density}%.${isOptimal ? ' Great — this is close to the optimal density.' : ' This is within the recommended range.'}`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n // --- Distribution check ---\n const distributionPoints: string[] = [];\n if (!occurrences.inFirstParagraph) distributionPoints.push('introduction');\n if (!occurrences.inH1 && occurrences.inHeadings === 0) distributionPoints.push('headings');\n if (!occurrences.inSlug) distributionPoints.push('slug');\n if (occurrences.inAltText === 0 && images && images.length > 0)\n distributionPoints.push('image alt text');\n\n if (distributionPoints.length === 0) {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description:\n 'The focus keyphrase is well-distributed across the introduction, headings, slug, and image alt text.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else if (distributionPoints.length <= 2) {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description: `Consider adding the keyphrase to: ${distributionPoints.join(', ')}.`,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description: `The keyphrase is missing from: ${distributionPoints.join(', ')}. Distribute it more broadly.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n });\n }\n\n return results;\n}\n","// @power-seo/content-analysis — Headings Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { stripHtml } from '@power-seo/core';\n\ninterface HeadingInfo {\n level: number;\n text: string;\n}\n\n/**\n * Parse all headings (h1-h6) from HTML using plain string search.\n * Avoids regex ReDoS on crafted inputs with many repeated heading-like tags.\n */\nfunction parseHeadings(html: string): HeadingInfo[] {\n const headings: HeadingInfo[] = [];\n const lc = html.toLowerCase();\n let pos = 0;\n\n while (pos < lc.length) {\n // Find the next heading tag of any level\n let earliest = -1;\n let earliestLevel = 0;\n for (let level = 1; level <= 6; level++) {\n const idx = lc.indexOf(`<h${level}`, pos);\n if (idx !== -1 && (earliest === -1 || idx < earliest)) {\n earliest = idx;\n earliestLevel = level;\n }\n }\n if (earliest === -1) break;\n\n const contentStart = lc.indexOf('>', earliest);\n if (contentStart === -1) break;\n\n const closeTag = `</h${earliestLevel}>`;\n const closeIdx = lc.indexOf(closeTag, contentStart + 1);\n if (closeIdx === -1) {\n pos = contentStart + 1;\n continue;\n }\n\n headings.push({\n level: earliestLevel,\n text: stripHtml(html.slice(contentStart + 1, closeIdx)),\n });\n pos = closeIdx + closeTag.length;\n }\n\n return headings;\n}\n\nexport function checkHeadings(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { content, focusKeyphrase } = input;\n const headings = parseHeadings(content);\n\n // --- H1 & structure check ---\n const h1s = headings.filter((h) => h.level === 1);\n\n if (h1s.length === 0) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: 'No H1 heading found. Add exactly one H1 as the main heading of your page.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n } else if (h1s.length > 1) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: `Found ${h1s.length} H1 headings. Use exactly one H1 per page for proper SEO.`,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n // Check heading hierarchy\n let hasSkippedLevel = false;\n for (let i = 1; i < headings.length; i++) {\n const prev = headings[i - 1]!;\n const curr = headings[i]!;\n if (curr.level > prev.level + 1) {\n hasSkippedLevel = true;\n break;\n }\n }\n\n if (hasSkippedLevel) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description:\n 'The heading hierarchy skips levels (e.g., H2 to H4). Use sequential heading levels for better accessibility and SEO.',\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: 'The heading structure looks good with a single H1 and proper hierarchy.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n }\n\n // --- Keyphrase in headings check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const subheadings = headings.filter((h) => h.level >= 2);\n const hasKeyphraseInSubheading = subheadings.some((h) => h.text.toLowerCase().includes(kp));\n\n if (subheadings.length === 0) {\n results.push({\n id: 'heading-keyphrase',\n title: 'Keyphrase in subheadings',\n description:\n 'No subheadings (H2-H6) found. Add subheadings to structure your content and include the focus keyphrase.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n } else if (hasKeyphraseInSubheading) {\n results.push({\n id: 'heading-keyphrase',\n title: 'Keyphrase in subheadings',\n description: 'The focus keyphrase appears in at least one subheading. Nice!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'heading-keyphrase',\n title: 'Keyphrase in subheadings',\n description:\n 'The focus keyphrase does not appear in any subheading. Consider adding it to an H2 or H3.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// @power-seo/content-analysis — Word Count Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { getWords, MIN_WORD_COUNT, RECOMMENDED_WORD_COUNT } from '@power-seo/core';\n\nexport function checkWordCount(input: ContentAnalysisInput): AnalysisResult {\n const words = getWords(input.content);\n const count = words.length;\n\n if (count < MIN_WORD_COUNT) {\n return {\n id: 'word-count',\n title: 'Word count',\n description: `The content is ${count} words, which is below the recommended minimum of ${MIN_WORD_COUNT}. Add more content to improve SEO.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n };\n }\n\n if (count < RECOMMENDED_WORD_COUNT) {\n return {\n id: 'word-count',\n title: 'Word count',\n description: `The content is ${count} words. Consider expanding to at least ${RECOMMENDED_WORD_COUNT} words for more comprehensive coverage.`,\n status: 'ok',\n score: 3,\n maxScore: 5,\n };\n }\n\n return {\n id: 'word-count',\n title: 'Word count',\n description: `The content is ${count} words. Good — this provides enough depth for search engines.`,\n status: 'good',\n score: 5,\n maxScore: 5,\n };\n}\n","// @power-seo/content-analysis — Images Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\n\nexport function checkImages(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { images, focusKeyphrase } = input;\n\n if (!images || images.length === 0) {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description: 'No images found. Consider adding images to make your content more engaging.',\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n return results;\n }\n\n // --- Alt text check ---\n const missingAlt = images.filter((img) => !img.alt || img.alt.trim().length === 0);\n\n if (missingAlt.length === 0) {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description: 'All images have alt text. Great for accessibility and SEO!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else if (missingAlt.length === images.length) {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description:\n 'None of the images have alt text. Add descriptive alt attributes for accessibility and SEO.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description: `${missingAlt.length} of ${images.length} images are missing alt text. Add alt attributes to all images.`,\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n\n // --- Keyphrase in alt text check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const hasKeyphraseInAlt = images.some((img) => img.alt && img.alt.toLowerCase().includes(kp));\n\n if (hasKeyphraseInAlt) {\n results.push({\n id: 'image-keyphrase',\n title: 'Keyphrase in image alt',\n description: 'The focus keyphrase appears in at least one image alt attribute.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'image-keyphrase',\n title: 'Keyphrase in image alt',\n description:\n 'The focus keyphrase does not appear in any image alt attribute. Add it to at least one image.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// @power-seo/content-analysis — Links Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\n\nexport function checkLinks(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { internalLinks, externalLinks } = input;\n\n const hasInternal = internalLinks && internalLinks.length > 0;\n const hasExternal = externalLinks && externalLinks.length > 0;\n\n if (!hasInternal) {\n results.push({\n id: 'internal-links',\n title: 'Internal links',\n description:\n 'No internal links found. Add links to other pages on your site to improve crawlability and distribute link equity.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'internal-links',\n title: 'Internal links',\n description: `Found ${internalLinks!.length} internal link${internalLinks!.length === 1 ? '' : 's'}. Good for site structure and SEO.`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n if (!hasExternal) {\n results.push({\n id: 'external-links',\n title: 'External links',\n description:\n 'No external links found. Consider adding outbound links to authoritative sources to strengthen your content.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'external-links',\n title: 'External links',\n description: `Found ${externalLinks!.length} external link${externalLinks!.length === 1 ? '' : 's'}. Linking to quality sources adds credibility.`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n return results;\n}\n","// @power-seo/content-analysis — Content Analyzer Orchestrator\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, ContentAnalysisOutput, AnalysisResult } from '@power-seo/core';\nimport type { AnalysisConfig, CheckId } from './types.js';\nimport { checkTitle } from './checks/title.js';\nimport { checkMetaDescription } from './checks/meta-description.js';\nimport { checkKeyphraseUsage } from './checks/keyphrase-usage.js';\nimport { checkHeadings } from './checks/headings.js';\nimport { checkWordCount } from './checks/word-count.js';\nimport { checkImages } from './checks/images.js';\nimport { checkLinks } from './checks/links.js';\n\n/**\n * Run all SEO content analysis checks and return aggregated results.\n *\n * @example\n * ```ts\n * const output = analyzeContent({\n * title: 'My Blog Post',\n * metaDescription: 'A description of my blog post about SEO.',\n * content: '<h1>My Blog Post</h1><p>Content goes here...</p>',\n * focusKeyphrase: 'blog post',\n * });\n * console.log(output.score, output.maxScore, output.recommendations);\n * ```\n */\nexport function analyzeContent(\n input: ContentAnalysisInput,\n config?: AnalysisConfig,\n): ContentAnalysisOutput {\n const disabled = new Set<CheckId>(config?.disabledChecks ?? []);\n\n const allResults: AnalysisResult[] = [];\n\n // Run each check group and collect results\n const titleResults = checkTitle(input);\n const metaResults = checkMetaDescription(input);\n const keyphraseResults = checkKeyphraseUsage(input);\n const headingResults = checkHeadings(input);\n const wordCountResult = checkWordCount(input);\n const imageResults = checkImages(input);\n const linkResults = checkLinks(input);\n\n // Flatten all results\n const candidateResults = [\n ...titleResults,\n ...metaResults,\n ...keyphraseResults,\n ...headingResults,\n wordCountResult,\n ...imageResults,\n ...linkResults,\n ];\n\n // Filter out disabled checks\n for (const result of candidateResults) {\n if (!disabled.has(result.id as CheckId)) {\n allResults.push(result);\n }\n }\n\n // Sum scores\n const score = allResults.reduce((sum, r) => sum + r.score, 0);\n const maxScore = allResults.reduce((sum, r) => sum + r.maxScore, 0);\n\n // Generate recommendations from poor/ok results\n const recommendations = allResults\n .filter((r) => r.status === 'poor' || r.status === 'ok')\n .map((r) => r.description);\n\n return {\n score,\n maxScore,\n results: allResults,\n recommendations,\n 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@@ -1,1 +0,1 @@

{"version":3,"sources":["../src/react.ts","../src/checks/title.ts","../src/checks/meta-description.ts","../src/checks/keyphrase-usage.ts","../src/checks/headings.ts","../src/checks/word-count.ts","../src/checks/images.ts","../src/checks/links.ts","../src/analyzer.ts"],"sourcesContent":["// ============================================================================\n// @power-seo/content-analysis — React Components\n// ============================================================================\n\nimport { createElement, useMemo } from 'react';\nimport type { ReactNode } from 'react';\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport type { AnalysisConfig } from './types.js';\nimport { analyzeContent } from './analyzer.js';\n\n// --- ScorePanel ---\n\nexport interface ScorePanelProps {\n score: number;\n maxScore: number;\n}\n\nfunction getScoreColor(percentage: number): string {\n if (percentage >= 70) return '#1e8e3e';\n if (percentage >= 40) return '#f29900';\n return '#d93025';\n}\n\nfunction getScoreLabel(percentage: number): string {\n if (percentage >= 70) return 'Good';\n if (percentage >= 40) return 'OK';\n return 'Needs improvement';\n}\n\n/**\n * Displays an overall SEO score as a colored bar with label.\n */\nexport function ScorePanel({ score, maxScore }: ScorePanelProps) {\n const percentage = maxScore > 0 ? Math.round((score / maxScore) * 100) : 0;\n const color = getScoreColor(percentage);\n const label = getScoreLabel(percentage);\n\n return createElement(\n 'div',\n {\n style: {\n fontFamily: 'system-ui, -apple-system, sans-serif',\n padding: '16px',\n borderRadius: '8px',\n border: '1px solid #e0e0e0',\n backgroundColor: '#fff',\n },\n },\n createElement(\n 'div',\n {\n style: {\n display: 'flex',\n justifyContent: 'space-between',\n alignItems: 'center',\n marginBottom: '8px',\n },\n },\n createElement(\n 'span',\n { style: { fontWeight: 600, fontSize: '14px', color: '#333' } },\n 'SEO Score',\n ),\n createElement(\n 'span',\n { style: { fontWeight: 700, fontSize: '18px', color } },\n `${percentage}%`,\n ),\n ),\n createElement(\n 'div',\n {\n style: {\n width: '100%',\n height: '8px',\n backgroundColor: '#e8e8e8',\n borderRadius: '4px',\n overflow: 'hidden',\n },\n },\n createElement('div', {\n style: {\n width: `${percentage}%`,\n height: '100%',\n backgroundColor: color,\n borderRadius: '4px',\n transition: 'width 0.3s ease',\n },\n }),\n ),\n createElement(\n 'div',\n { style: { marginTop: '4px', fontSize: '12px', color: '#666' } },\n `${label} — ${score}/${maxScore} points`,\n ),\n );\n}\n\n// --- CheckList ---\n\nexport interface CheckListProps {\n results: AnalysisResult[];\n}\n\nconst STATUS_ICONS: Record<string, string> = {\n good: '\\u2705',\n ok: '\\u26a0\\ufe0f',\n poor: '\\u274c',\n};\n\nconst STATUS_COLORS: Record<string, string> = {\n good: '#1e8e3e',\n ok: '#f29900',\n poor: '#d93025',\n};\n\n/**\n * Renders analysis results as a list with status icons.\n */\nexport function CheckList({ results }: CheckListProps) {\n return createElement(\n 'ul',\n {\n style: {\n listStyle: 'none',\n padding: 0,\n margin: 0,\n fontFamily: 'system-ui, -apple-system, sans-serif',\n },\n },\n ...results.map((result) =>\n createElement(\n 'li',\n {\n key: result.id,\n style: {\n padding: '10px 12px',\n borderBottom: '1px solid #f0f0f0',\n display: 'flex',\n gap: '10px',\n alignItems: 'flex-start',\n },\n },\n createElement(\n 'span',\n { style: { flexShrink: 0, fontSize: '14px' } },\n STATUS_ICONS[result.status] ?? '',\n ),\n createElement(\n 'div',\n { style: { flex: 1 } },\n createElement(\n 'div',\n {\n style: {\n fontWeight: 600,\n fontSize: '13px',\n color: STATUS_COLORS[result.status] ?? '#333',\n },\n },\n result.title,\n ),\n createElement(\n 'div',\n { style: { fontSize: '12px', color: '#555', marginTop: '2px' } },\n result.description,\n ),\n ),\n ),\n ),\n );\n}\n\n// --- ContentAnalyzer ---\n\nexport interface ContentAnalyzerProps {\n input: ContentAnalysisInput;\n config?: AnalysisConfig;\n children?: ReactNode;\n}\n\n/**\n * All-in-one component that runs analysis and renders score + check list.\n */\nexport function ContentAnalyzer({ input, config, children }: ContentAnalyzerProps) {\n const output = useMemo(() => analyzeContent(input, config), [input, config]);\n\n return createElement(\n 'div',\n {\n style: {\n fontFamily: 'system-ui, -apple-system, sans-serif',\n },\n },\n createElement(ScorePanel, { score: output.score, maxScore: output.maxScore }),\n createElement('div', { style: { height: '12px' } }),\n createElement(CheckList, { results: output.results }),\n children ?? null,\n );\n}\n","// ============================================================================\n// @power-seo/content-analysis — Title Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { validateTitle } from '@power-seo/core';\n\nexport function checkTitle(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { title, focusKeyphrase } = input;\n\n // --- Presence & validity check ---\n if (!title || title.trim().length === 0) {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: 'No title has been set. Add a title to improve search visibility.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n return results;\n }\n\n const validation = validateTitle(title);\n\n if (!validation.valid) {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else if (validation.severity === 'warning') {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: validation.message,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n // --- Keyphrase in title check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const titleLower = title.toLowerCase();\n\n if (titleLower.includes(kp)) {\n results.push({\n id: 'title-keyphrase',\n title: 'Keyphrase in title',\n description: 'The focus keyphrase appears in the SEO title. Good job!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'title-keyphrase',\n title: 'Keyphrase in title',\n description:\n 'The focus keyphrase does not appear in the SEO title. Add it to improve relevance.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// ============================================================================\n// @power-seo/content-analysis — Meta Description Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { validateMetaDescription } from '@power-seo/core';\n\nexport function checkMetaDescription(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { metaDescription, focusKeyphrase } = input;\n\n // --- Presence & validity check ---\n if (!metaDescription || metaDescription.trim().length === 0) {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description:\n 'No meta description has been set. Add one to control how your page appears in search results.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n return results;\n }\n\n const validation = validateMetaDescription(metaDescription);\n\n if (!validation.valid) {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else if (validation.severity === 'warning') {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n // --- Keyphrase in meta description check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const descLower = metaDescription.toLowerCase();\n\n if (descLower.includes(kp)) {\n results.push({\n id: 'meta-description-keyphrase',\n title: 'Keyphrase in meta description',\n description: 'The focus keyphrase appears in the meta description. Well done!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'meta-description-keyphrase',\n title: 'Keyphrase in meta description',\n description:\n 'The focus keyphrase does not appear in the meta description. Add it to improve click-through rate.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// ============================================================================\n// @power-seo/content-analysis — Keyphrase Usage Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport {\n analyzeKeyphraseOccurrences,\n calculateKeywordDensity,\n KEYWORD_DENSITY,\n} from '@power-seo/core';\n\nexport function checkKeyphraseUsage(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { focusKeyphrase, title, metaDescription, content, slug, images } = input;\n\n if (!focusKeyphrase || focusKeyphrase.trim().length === 0) {\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: 'No focus keyphrase set. Set one to get keyphrase analysis.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n return results;\n }\n\n const occurrences = analyzeKeyphraseOccurrences({\n keyphrase: focusKeyphrase,\n title,\n metaDescription,\n content,\n slug,\n images,\n });\n\n const densityResult = calculateKeywordDensity(focusKeyphrase, content);\n\n // --- Density check ---\n if (densityResult.density < KEYWORD_DENSITY.MIN) {\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: `Keyphrase density is ${densityResult.density}%, which is below the recommended minimum of ${KEYWORD_DENSITY.MIN}%. Use the keyphrase more often.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n });\n } else if (densityResult.density > KEYWORD_DENSITY.MAX) {\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: `Keyphrase density is ${densityResult.density}%, which exceeds the recommended maximum of ${KEYWORD_DENSITY.MAX}%. Reduce usage to avoid keyword stuffing.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n });\n } else if (\n densityResult.density >= KEYWORD_DENSITY.MIN &&\n densityResult.density <= KEYWORD_DENSITY.MAX\n ) {\n const isOptimal = Math.abs(densityResult.density - KEYWORD_DENSITY.OPTIMAL) < 0.5;\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: `Keyphrase density is ${densityResult.density}%.${isOptimal ? ' Great — this is close to the optimal density.' : ' This is within the recommended range.'}`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n // --- Distribution check ---\n const distributionPoints: string[] = [];\n if (!occurrences.inFirstParagraph) distributionPoints.push('introduction');\n if (!occurrences.inH1 && occurrences.inHeadings === 0) distributionPoints.push('headings');\n if (!occurrences.inSlug) distributionPoints.push('slug');\n if (occurrences.inAltText === 0 && images && images.length > 0)\n distributionPoints.push('image alt text');\n\n if (distributionPoints.length === 0) {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description:\n 'The focus keyphrase is well-distributed across the introduction, headings, slug, and image alt text.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else if (distributionPoints.length <= 2) {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description: `Consider adding the keyphrase to: ${distributionPoints.join(', ')}.`,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description: `The keyphrase is missing from: ${distributionPoints.join(', ')}. Distribute it more broadly.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n });\n }\n\n return results;\n}\n","// ============================================================================\n// @power-seo/content-analysis — Headings Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { stripHtml } from '@power-seo/core';\n\ninterface HeadingInfo {\n level: number;\n text: string;\n}\n\n/**\n * Parse all headings (h1-h6) from HTML using plain string search.\n * Avoids regex ReDoS on crafted inputs with many repeated heading-like tags.\n */\nfunction parseHeadings(html: string): HeadingInfo[] {\n const headings: HeadingInfo[] = [];\n const lc = html.toLowerCase();\n let pos = 0;\n\n while (pos < lc.length) {\n // Find the next heading tag of any level\n let earliest = -1;\n let earliestLevel = 0;\n for (let level = 1; level <= 6; level++) {\n const idx = lc.indexOf(`<h${level}`, pos);\n if (idx !== -1 && (earliest === -1 || idx < earliest)) {\n earliest = idx;\n earliestLevel = level;\n }\n }\n if (earliest === -1) break;\n\n const contentStart = lc.indexOf('>', earliest);\n if (contentStart === -1) break;\n\n const closeTag = `</h${earliestLevel}>`;\n const closeIdx = lc.indexOf(closeTag, contentStart + 1);\n if (closeIdx === -1) {\n pos = contentStart + 1;\n continue;\n }\n\n headings.push({\n level: earliestLevel,\n text: stripHtml(html.slice(contentStart + 1, closeIdx)),\n });\n pos = closeIdx + closeTag.length;\n }\n\n return headings;\n}\n\nexport function checkHeadings(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { content, focusKeyphrase } = input;\n const headings = parseHeadings(content);\n\n // --- H1 & structure check ---\n const h1s = headings.filter((h) => h.level === 1);\n\n if (h1s.length === 0) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: 'No H1 heading found. Add exactly one H1 as the main heading of your page.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n } else if (h1s.length > 1) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: `Found ${h1s.length} H1 headings. Use exactly one H1 per page for proper SEO.`,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n // Check heading hierarchy\n let hasSkippedLevel = false;\n for (let i = 1; i < headings.length; i++) {\n const prev = headings[i - 1]!;\n const curr = headings[i]!;\n if (curr.level > prev.level + 1) {\n hasSkippedLevel = true;\n break;\n }\n }\n\n if (hasSkippedLevel) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description:\n 'The heading hierarchy skips levels (e.g., H2 to H4). Use sequential heading levels for better accessibility and SEO.',\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: 'The heading structure looks good with a single H1 and proper hierarchy.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n }\n\n // --- Keyphrase in headings check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const subheadings = headings.filter((h) => h.level >= 2);\n const hasKeyphraseInSubheading = subheadings.some((h) => h.text.toLowerCase().includes(kp));\n\n if (subheadings.length === 0) {\n results.push({\n id: 'heading-keyphrase',\n title: 'Keyphrase in subheadings',\n description:\n 'No subheadings (H2-H6) found. Add subheadings to structure your content and include the focus keyphrase.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n } else if (hasKeyphraseInSubheading) {\n results.push({\n id: 'heading-keyphrase',\n title: 'Keyphrase in subheadings',\n description: 'The focus keyphrase appears in at least one subheading. Nice!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'heading-keyphrase',\n title: 'Keyphrase in subheadings',\n description:\n 'The focus keyphrase does not appear in any subheading. Consider adding it to an H2 or H3.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// ============================================================================\n// @power-seo/content-analysis — Word Count Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { getWords, MIN_WORD_COUNT, RECOMMENDED_WORD_COUNT } from '@power-seo/core';\n\nexport function checkWordCount(input: ContentAnalysisInput): AnalysisResult {\n const words = getWords(input.content);\n const count = words.length;\n\n if (count < MIN_WORD_COUNT) {\n return {\n id: 'word-count',\n title: 'Word count',\n description: `The content is ${count} words, which is below the recommended minimum of ${MIN_WORD_COUNT}. Add more content to improve SEO.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n };\n }\n\n if (count < RECOMMENDED_WORD_COUNT) {\n return {\n id: 'word-count',\n title: 'Word count',\n description: `The content is ${count} words. Consider expanding to at least ${RECOMMENDED_WORD_COUNT} words for more comprehensive coverage.`,\n status: 'ok',\n score: 3,\n maxScore: 5,\n };\n }\n\n return {\n id: 'word-count',\n title: 'Word count',\n description: `The content is ${count} words. Good — this provides enough depth for search engines.`,\n status: 'good',\n score: 5,\n maxScore: 5,\n };\n}\n","// ============================================================================\n// @power-seo/content-analysis — Images Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\n\nexport function checkImages(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { images, focusKeyphrase } = input;\n\n if (!images || images.length === 0) {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description: 'No images found. Consider adding images to make your content more engaging.',\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n return results;\n }\n\n // --- Alt text check ---\n const missingAlt = images.filter((img) => !img.alt || img.alt.trim().length === 0);\n\n if (missingAlt.length === 0) {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description: 'All images have alt text. Great for accessibility and SEO!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else if (missingAlt.length === images.length) {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description:\n 'None of the images have alt text. Add descriptive alt attributes for accessibility and SEO.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description: `${missingAlt.length} of ${images.length} images are missing alt text. Add alt attributes to all images.`,\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n\n // --- Keyphrase in alt text check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const hasKeyphraseInAlt = images.some((img) => img.alt && img.alt.toLowerCase().includes(kp));\n\n if (hasKeyphraseInAlt) {\n results.push({\n id: 'image-keyphrase',\n title: 'Keyphrase in image alt',\n description: 'The focus keyphrase appears in at least one image alt attribute.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'image-keyphrase',\n title: 'Keyphrase in image alt',\n description:\n 'The focus keyphrase does not appear in any image alt attribute. Add it to at least one image.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// ============================================================================\n// @power-seo/content-analysis — Links Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\n\nexport function checkLinks(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { internalLinks, externalLinks } = input;\n\n const hasInternal = internalLinks && internalLinks.length > 0;\n const hasExternal = externalLinks && externalLinks.length > 0;\n\n if (!hasInternal) {\n results.push({\n id: 'internal-links',\n title: 'Internal links',\n description:\n 'No internal links found. Add links to other pages on your site to improve crawlability and distribute link equity.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'internal-links',\n title: 'Internal links',\n description: `Found ${internalLinks!.length} internal link${internalLinks!.length === 1 ? '' : 's'}. Good for site structure and SEO.`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n if (!hasExternal) {\n results.push({\n id: 'external-links',\n title: 'External links',\n description:\n 'No external links found. Consider adding outbound links to authoritative sources to strengthen your content.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'external-links',\n title: 'External links',\n description: `Found ${externalLinks!.length} external link${externalLinks!.length === 1 ? '' : 's'}. Linking to quality sources adds credibility.`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n return results;\n}\n","// ============================================================================\n// @power-seo/content-analysis — Content Analyzer Orchestrator\n// ============================================================================\n\nimport type { ContentAnalysisInput, ContentAnalysisOutput, AnalysisResult } from '@power-seo/core';\nimport type { AnalysisConfig, CheckId } from './types.js';\nimport { checkTitle } from './checks/title.js';\nimport { checkMetaDescription } from './checks/meta-description.js';\nimport { checkKeyphraseUsage } from './checks/keyphrase-usage.js';\nimport { checkHeadings } from './checks/headings.js';\nimport { checkWordCount } from './checks/word-count.js';\nimport { checkImages } from './checks/images.js';\nimport { checkLinks } from './checks/links.js';\n\n/**\n * Run all SEO content analysis checks and return aggregated results.\n *\n * @example\n * ```ts\n * const output = analyzeContent({\n * title: 'My Blog Post',\n * metaDescription: 'A description of my blog post about SEO.',\n * content: '<h1>My Blog Post</h1><p>Content goes here...</p>',\n * focusKeyphrase: 'blog post',\n * });\n * console.log(output.score, output.maxScore, output.recommendations);\n * ```\n */\nexport function analyzeContent(\n input: ContentAnalysisInput,\n config?: AnalysisConfig,\n): ContentAnalysisOutput {\n const disabled = new Set<CheckId>(config?.disabledChecks ?? []);\n\n const allResults: AnalysisResult[] = [];\n\n // Run each check group and collect results\n const titleResults = checkTitle(input);\n const metaResults = checkMetaDescription(input);\n const keyphraseResults = checkKeyphraseUsage(input);\n const headingResults = checkHeadings(input);\n const wordCountResult = checkWordCount(input);\n const imageResults = checkImages(input);\n const linkResults = checkLinks(input);\n\n // Flatten all results\n const candidateResults = [\n ...titleResults,\n ...metaResults,\n ...keyphraseResults,\n ...headingResults,\n wordCountResult,\n ...imageResults,\n ...linkResults,\n ];\n\n // Filter out disabled checks\n for (const result of candidateResults) {\n if (!disabled.has(result.id as CheckId)) {\n allResults.push(result);\n }\n }\n\n // Sum scores\n const score = allResults.reduce((sum, r) => sum + r.score, 0);\n const maxScore = allResults.reduce((sum, r) => sum + r.maxScore, 0);\n\n // Generate recommendations from poor/ok results\n const recommendations = allResults\n .filter((r) => r.status === 'poor' || r.status === 'ok')\n .map((r) => r.description);\n\n return {\n score,\n maxScore,\n results: allResults,\n recommendations,\n 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{"version":3,"sources":["../src/react.ts","../src/checks/title.ts","../src/checks/meta-description.ts","../src/checks/keyphrase-usage.ts","../src/checks/headings.ts","../src/checks/word-count.ts","../src/checks/images.ts","../src/checks/links.ts","../src/analyzer.ts"],"sourcesContent":["// @power-seo/content-analysis — React Components\n// ----------------------------------------------------------------------------\n\nimport { createElement, useMemo } from 'react';\nimport type { ReactNode } from 'react';\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport type { AnalysisConfig } from './types.js';\nimport { analyzeContent } from './analyzer.js';\n\n// --- ScorePanel ---\n\nexport interface ScorePanelProps {\n score: number;\n maxScore: number;\n}\n\nfunction getScoreColor(percentage: number): string {\n if (percentage >= 70) return '#1e8e3e';\n if (percentage >= 40) return '#f29900';\n return '#d93025';\n}\n\nfunction getScoreLabel(percentage: number): string {\n if (percentage >= 70) return 'Good';\n if (percentage >= 40) return 'OK';\n return 'Needs improvement';\n}\n\n/**\n * Displays an overall SEO score as a colored bar with label.\n */\nexport function ScorePanel({ score, maxScore }: ScorePanelProps) {\n const percentage = maxScore > 0 ? 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'',\n ),\n createElement(\n 'div',\n { style: { flex: 1 } },\n createElement(\n 'div',\n {\n style: {\n fontWeight: 600,\n fontSize: '13px',\n color: STATUS_COLORS[result.status] ?? '#333',\n },\n },\n result.title,\n ),\n createElement(\n 'div',\n { style: { fontSize: '12px', color: '#555', marginTop: '2px' } },\n result.description,\n ),\n ),\n ),\n ),\n );\n}\n\n// --- ContentAnalyzer ---\n\nexport interface ContentAnalyzerProps {\n input: ContentAnalysisInput;\n config?: AnalysisConfig;\n children?: ReactNode;\n}\n\n/**\n * All-in-one component that runs analysis and renders score + check list.\n */\nexport function ContentAnalyzer({ input, config, children }: ContentAnalyzerProps) {\n const output = useMemo(() => analyzeContent(input, config), [input, config]);\n\n return createElement(\n 'div',\n {\n style: {\n fontFamily: 'system-ui, -apple-system, sans-serif',\n },\n },\n createElement(ScorePanel, { score: output.score, maxScore: output.maxScore }),\n createElement('div', { style: { height: '12px' } }),\n createElement(CheckList, { results: output.results }),\n children ?? null,\n );\n}\n","// @power-seo/content-analysis — Title Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { validateTitle } from '@power-seo/core';\n\nexport function checkTitle(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { title, focusKeyphrase } = input;\n\n // --- Presence & validity check ---\n if (!title || title.trim().length === 0) {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: 'No title has been set. Add a title to improve search visibility.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n return results;\n }\n\n const validation = validateTitle(title);\n\n if (!validation.valid) {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else if (validation.severity === 'warning') {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: validation.message,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n // --- Keyphrase in title check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const titleLower = title.toLowerCase();\n\n if (titleLower.includes(kp)) {\n results.push({\n id: 'title-keyphrase',\n title: 'Keyphrase in title',\n description: 'The focus keyphrase appears in the SEO title. Good job!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'title-keyphrase',\n title: 'Keyphrase in title',\n description:\n 'The focus keyphrase does not appear in the SEO title. Add it to improve relevance.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// @power-seo/content-analysis — Meta Description Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { validateMetaDescription } from '@power-seo/core';\n\nexport function checkMetaDescription(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { metaDescription, focusKeyphrase } = input;\n\n // --- Presence & validity check ---\n if (!metaDescription || metaDescription.trim().length === 0) {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description:\n 'No meta description has been set. Add one to control how your page appears in search results.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n return results;\n }\n\n const validation = validateMetaDescription(metaDescription);\n\n if (!validation.valid) {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else if (validation.severity === 'warning') {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n // --- Keyphrase in meta description check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const descLower = metaDescription.toLowerCase();\n\n if (descLower.includes(kp)) {\n results.push({\n id: 'meta-description-keyphrase',\n title: 'Keyphrase in meta description',\n description: 'The focus keyphrase appears in the meta description. Well done!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'meta-description-keyphrase',\n title: 'Keyphrase in meta description',\n description:\n 'The focus keyphrase does not appear in the meta description. 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Set one to get keyphrase analysis.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n return results;\n }\n\n const occurrences = analyzeKeyphraseOccurrences({\n keyphrase: focusKeyphrase,\n title,\n metaDescription,\n content,\n slug,\n images,\n });\n\n const densityResult = calculateKeywordDensity(focusKeyphrase, content);\n\n // --- Density check ---\n if (densityResult.density < KEYWORD_DENSITY.MIN) {\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: `Keyphrase density is ${densityResult.density}%, which is below the recommended minimum of ${KEYWORD_DENSITY.MIN}%. Use the keyphrase more often.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n });\n } else if (densityResult.density > KEYWORD_DENSITY.MAX) {\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: `Keyphrase density is ${densityResult.density}%, which exceeds the recommended maximum of ${KEYWORD_DENSITY.MAX}%. Reduce usage to avoid keyword stuffing.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n });\n } else if (\n densityResult.density >= KEYWORD_DENSITY.MIN &&\n densityResult.density <= KEYWORD_DENSITY.MAX\n ) {\n const isOptimal = Math.abs(densityResult.density - KEYWORD_DENSITY.OPTIMAL) < 0.5;\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: `Keyphrase density is ${densityResult.density}%.${isOptimal ? ' Great — this is close to the optimal density.' : ' This is within the recommended range.'}`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n // --- Distribution check ---\n const distributionPoints: string[] = [];\n if (!occurrences.inFirstParagraph) distributionPoints.push('introduction');\n if (!occurrences.inH1 && occurrences.inHeadings === 0) distributionPoints.push('headings');\n if (!occurrences.inSlug) distributionPoints.push('slug');\n if (occurrences.inAltText === 0 && images && images.length > 0)\n distributionPoints.push('image alt text');\n\n if (distributionPoints.length === 0) {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description:\n 'The focus keyphrase is well-distributed across the introduction, headings, slug, and image alt text.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else if (distributionPoints.length <= 2) {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description: `Consider adding the keyphrase to: ${distributionPoints.join(', ')}.`,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description: `The keyphrase is missing from: ${distributionPoints.join(', ')}. Distribute it more broadly.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n });\n }\n\n return results;\n}\n","// @power-seo/content-analysis — Headings Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { stripHtml } from '@power-seo/core';\n\ninterface HeadingInfo {\n level: number;\n text: string;\n}\n\n/**\n * Parse all headings (h1-h6) from HTML using plain string search.\n * Avoids regex ReDoS on crafted inputs with many repeated heading-like tags.\n */\nfunction parseHeadings(html: string): HeadingInfo[] {\n const headings: HeadingInfo[] = [];\n const lc = html.toLowerCase();\n let pos = 0;\n\n while (pos < lc.length) {\n // Find the next heading tag of any level\n let earliest = -1;\n let earliestLevel = 0;\n for (let level = 1; level <= 6; level++) {\n const idx = lc.indexOf(`<h${level}`, pos);\n if (idx !== -1 && (earliest === -1 || idx < earliest)) {\n earliest = idx;\n earliestLevel = level;\n }\n }\n if (earliest === -1) break;\n\n const contentStart = lc.indexOf('>', earliest);\n if (contentStart === -1) break;\n\n const closeTag = `</h${earliestLevel}>`;\n const closeIdx = lc.indexOf(closeTag, contentStart + 1);\n if (closeIdx === -1) {\n pos = contentStart + 1;\n continue;\n }\n\n headings.push({\n level: earliestLevel,\n text: stripHtml(html.slice(contentStart + 1, closeIdx)),\n });\n pos = closeIdx + closeTag.length;\n }\n\n return headings;\n}\n\nexport function checkHeadings(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { content, focusKeyphrase } = input;\n const headings = parseHeadings(content);\n\n // --- H1 & structure check ---\n const h1s = headings.filter((h) => h.level === 1);\n\n if (h1s.length === 0) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: 'No H1 heading found. Add exactly one H1 as the main heading of your page.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n } else if (h1s.length > 1) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: `Found ${h1s.length} H1 headings. Use exactly one H1 per page for proper SEO.`,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n // Check heading hierarchy\n let hasSkippedLevel = false;\n for (let i = 1; i < headings.length; i++) {\n const prev = headings[i - 1]!;\n const curr = headings[i]!;\n if (curr.level > prev.level + 1) {\n hasSkippedLevel = true;\n break;\n }\n }\n\n if (hasSkippedLevel) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description:\n 'The heading hierarchy skips levels (e.g., H2 to H4). Use sequential heading levels for better accessibility and SEO.',\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: 'The heading structure looks good with a single H1 and proper hierarchy.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n }\n\n // --- Keyphrase in headings check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const subheadings = headings.filter((h) => h.level >= 2);\n const hasKeyphraseInSubheading = subheadings.some((h) => h.text.toLowerCase().includes(kp));\n\n if (subheadings.length === 0) {\n results.push({\n id: 'heading-keyphrase',\n title: 'Keyphrase in subheadings',\n description:\n 'No subheadings (H2-H6) found. Add subheadings to structure your content and include the focus keyphrase.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n } else if (hasKeyphraseInSubheading) {\n results.push({\n id: 'heading-keyphrase',\n title: 'Keyphrase in subheadings',\n description: 'The focus keyphrase appears in at least one subheading. Nice!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'heading-keyphrase',\n title: 'Keyphrase in subheadings',\n description:\n 'The focus keyphrase does not appear in any subheading. Consider adding it to an H2 or H3.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// @power-seo/content-analysis — Word Count Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { getWords, MIN_WORD_COUNT, RECOMMENDED_WORD_COUNT } from '@power-seo/core';\n\nexport function checkWordCount(input: ContentAnalysisInput): AnalysisResult {\n const words = getWords(input.content);\n const count = words.length;\n\n if (count < MIN_WORD_COUNT) {\n return {\n id: 'word-count',\n title: 'Word count',\n description: `The content is ${count} words, which is below the recommended minimum of ${MIN_WORD_COUNT}. Add more content to improve SEO.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n };\n }\n\n if (count < RECOMMENDED_WORD_COUNT) {\n return {\n id: 'word-count',\n title: 'Word count',\n description: `The content is ${count} words. Consider expanding to at least ${RECOMMENDED_WORD_COUNT} words for more comprehensive coverage.`,\n status: 'ok',\n score: 3,\n maxScore: 5,\n };\n }\n\n return {\n id: 'word-count',\n title: 'Word count',\n description: `The content is ${count} words. Good — this provides enough depth for search engines.`,\n status: 'good',\n score: 5,\n maxScore: 5,\n };\n}\n","// @power-seo/content-analysis — Images Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\n\nexport function checkImages(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { images, focusKeyphrase } = input;\n\n if (!images || images.length === 0) {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description: 'No images found. Consider adding images to make your content more engaging.',\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n return results;\n }\n\n // --- Alt text check ---\n const missingAlt = images.filter((img) => !img.alt || img.alt.trim().length === 0);\n\n if (missingAlt.length === 0) {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description: 'All images have alt text. Great for accessibility and SEO!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else if (missingAlt.length === images.length) {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description:\n 'None of the images have alt text. Add descriptive alt attributes for accessibility and SEO.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description: `${missingAlt.length} of ${images.length} images are missing alt text. 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Add it to at least one image.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// @power-seo/content-analysis — Links Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\n\nexport function checkLinks(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { internalLinks, externalLinks } = input;\n\n const hasInternal = internalLinks && internalLinks.length > 0;\n const hasExternal = externalLinks && externalLinks.length > 0;\n\n if (!hasInternal) {\n results.push({\n id: 'internal-links',\n title: 'Internal links',\n description:\n 'No internal links found. Add links to other pages on your site to improve crawlability and distribute link equity.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'internal-links',\n title: 'Internal links',\n description: `Found ${internalLinks!.length} internal link${internalLinks!.length === 1 ? '' : 's'}. Good for site structure and SEO.`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n if (!hasExternal) {\n results.push({\n id: 'external-links',\n title: 'External links',\n description:\n 'No external links found. Consider adding outbound links to authoritative sources to strengthen your content.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'external-links',\n title: 'External links',\n description: `Found ${externalLinks!.length} external link${externalLinks!.length === 1 ? '' : 's'}. Linking to quality sources adds credibility.`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n return results;\n}\n","// @power-seo/content-analysis — Content Analyzer Orchestrator\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, ContentAnalysisOutput, AnalysisResult } from '@power-seo/core';\nimport type { AnalysisConfig, CheckId } from './types.js';\nimport { checkTitle } from './checks/title.js';\nimport { checkMetaDescription } from './checks/meta-description.js';\nimport { checkKeyphraseUsage } from './checks/keyphrase-usage.js';\nimport { checkHeadings } from './checks/headings.js';\nimport { checkWordCount } from './checks/word-count.js';\nimport { checkImages } from './checks/images.js';\nimport { checkLinks } from './checks/links.js';\n\n/**\n * Run all SEO content analysis checks and return aggregated results.\n *\n * @example\n * ```ts\n * const output = analyzeContent({\n * title: 'My Blog Post',\n * metaDescription: 'A description of my blog post about SEO.',\n * content: '<h1>My Blog Post</h1><p>Content goes here...</p>',\n * focusKeyphrase: 'blog post',\n * });\n * console.log(output.score, output.maxScore, output.recommendations);\n * ```\n */\nexport function analyzeContent(\n input: ContentAnalysisInput,\n config?: AnalysisConfig,\n): ContentAnalysisOutput {\n const disabled = new Set<CheckId>(config?.disabledChecks ?? []);\n\n const allResults: AnalysisResult[] = [];\n\n // Run each check group and collect results\n const titleResults = checkTitle(input);\n const metaResults = checkMetaDescription(input);\n const keyphraseResults = checkKeyphraseUsage(input);\n const headingResults = checkHeadings(input);\n const wordCountResult = checkWordCount(input);\n const imageResults = checkImages(input);\n const linkResults = checkLinks(input);\n\n // Flatten all results\n const candidateResults = [\n ...titleResults,\n ...metaResults,\n ...keyphraseResults,\n ...headingResults,\n wordCountResult,\n ...imageResults,\n ...linkResults,\n ];\n\n // Filter out disabled checks\n for (const result of candidateResults) {\n if (!disabled.has(result.id as CheckId)) {\n allResults.push(result);\n }\n }\n\n // Sum scores\n const score = allResults.reduce((sum, r) => sum + r.score, 0);\n const maxScore = allResults.reduce((sum, r) => sum + r.maxScore, 0);\n\n // Generate recommendations from poor/ok results\n const recommendations = allResults\n .filter((r) => r.status === 'poor' || r.status === 'ok')\n .map((r) => r.description);\n\n return {\n score,\n maxScore,\n results: allResults,\n recommendations,\n 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@@ -1,1 +0,1 @@

{"version":3,"sources":["../src/react.ts","../src/checks/title.ts","../src/checks/meta-description.ts","../src/checks/keyphrase-usage.ts","../src/checks/headings.ts","../src/checks/word-count.ts","../src/checks/images.ts","../src/checks/links.ts","../src/analyzer.ts"],"sourcesContent":["// ============================================================================\n// @power-seo/content-analysis — React Components\n// ============================================================================\n\nimport { createElement, useMemo } from 'react';\nimport type { ReactNode } from 'react';\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport type { AnalysisConfig } from './types.js';\nimport { analyzeContent } from './analyzer.js';\n\n// --- ScorePanel ---\n\nexport interface ScorePanelProps {\n score: number;\n maxScore: number;\n}\n\nfunction getScoreColor(percentage: number): string {\n if (percentage >= 70) return '#1e8e3e';\n if (percentage >= 40) return '#f29900';\n return '#d93025';\n}\n\nfunction getScoreLabel(percentage: number): string {\n if (percentage >= 70) return 'Good';\n if (percentage >= 40) return 'OK';\n return 'Needs improvement';\n}\n\n/**\n * Displays an overall SEO score as a colored bar with label.\n */\nexport function ScorePanel({ score, maxScore }: ScorePanelProps) {\n const percentage = maxScore > 0 ? 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'',\n ),\n createElement(\n 'div',\n { style: { flex: 1 } },\n createElement(\n 'div',\n {\n style: {\n fontWeight: 600,\n fontSize: '13px',\n color: STATUS_COLORS[result.status] ?? 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Add a title to improve search visibility.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n return results;\n }\n\n const validation = validateTitle(title);\n\n if (!validation.valid) {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else if (validation.severity === 'warning') {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: validation.message,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n // --- Keyphrase in title check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const titleLower = title.toLowerCase();\n\n if (titleLower.includes(kp)) {\n results.push({\n id: 'title-keyphrase',\n title: 'Keyphrase in title',\n description: 'The focus keyphrase appears in the SEO title. Good job!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'title-keyphrase',\n title: 'Keyphrase in title',\n description:\n 'The focus keyphrase does not appear in the SEO title. Add it to improve relevance.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// ============================================================================\n// @power-seo/content-analysis — Meta Description Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { validateMetaDescription } from '@power-seo/core';\n\nexport function checkMetaDescription(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { metaDescription, focusKeyphrase } = input;\n\n // --- Presence & validity check ---\n if (!metaDescription || metaDescription.trim().length === 0) {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description:\n 'No meta description has been set. Add one to control how your page appears in search results.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n return results;\n }\n\n const validation = validateMetaDescription(metaDescription);\n\n if (!validation.valid) {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else if (validation.severity === 'warning') {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n // --- Keyphrase in meta description check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const descLower = metaDescription.toLowerCase();\n\n if (descLower.includes(kp)) {\n results.push({\n id: 'meta-description-keyphrase',\n title: 'Keyphrase in meta description',\n description: 'The focus keyphrase appears in the meta description. 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Set one to get keyphrase analysis.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n return results;\n }\n\n const occurrences = analyzeKeyphraseOccurrences({\n keyphrase: focusKeyphrase,\n title,\n metaDescription,\n content,\n slug,\n images,\n });\n\n const densityResult = calculateKeywordDensity(focusKeyphrase, content);\n\n // --- Density check ---\n if (densityResult.density < KEYWORD_DENSITY.MIN) {\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: `Keyphrase density is ${densityResult.density}%, which is below the recommended minimum of ${KEYWORD_DENSITY.MIN}%. Use the keyphrase more often.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n });\n } else if (densityResult.density > KEYWORD_DENSITY.MAX) {\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: `Keyphrase density is ${densityResult.density}%, which exceeds the recommended maximum of ${KEYWORD_DENSITY.MAX}%. Reduce usage to avoid keyword stuffing.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n });\n } else if (\n densityResult.density >= KEYWORD_DENSITY.MIN &&\n densityResult.density <= KEYWORD_DENSITY.MAX\n ) {\n const isOptimal = Math.abs(densityResult.density - KEYWORD_DENSITY.OPTIMAL) < 0.5;\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: `Keyphrase density is ${densityResult.density}%.${isOptimal ? ' Great — this is close to the optimal density.' : ' This is within the recommended range.'}`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n // --- Distribution check ---\n const distributionPoints: string[] = [];\n if (!occurrences.inFirstParagraph) distributionPoints.push('introduction');\n if (!occurrences.inH1 && occurrences.inHeadings === 0) distributionPoints.push('headings');\n if (!occurrences.inSlug) distributionPoints.push('slug');\n if (occurrences.inAltText === 0 && images && images.length > 0)\n distributionPoints.push('image alt text');\n\n if (distributionPoints.length === 0) {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description:\n 'The focus keyphrase is well-distributed across the introduction, headings, slug, and image alt text.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else if (distributionPoints.length <= 2) {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description: `Consider adding the keyphrase to: ${distributionPoints.join(', ')}.`,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description: `The keyphrase is missing from: ${distributionPoints.join(', ')}. Distribute it more broadly.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n });\n }\n\n return results;\n}\n","// ============================================================================\n// @power-seo/content-analysis — Headings Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { stripHtml } from '@power-seo/core';\n\ninterface HeadingInfo {\n level: number;\n text: string;\n}\n\n/**\n * Parse all headings (h1-h6) from HTML using plain string search.\n * Avoids regex ReDoS on crafted inputs with many repeated heading-like tags.\n */\nfunction parseHeadings(html: string): HeadingInfo[] {\n const headings: HeadingInfo[] = [];\n const lc = html.toLowerCase();\n let pos = 0;\n\n while (pos < lc.length) {\n // Find the next heading tag of any level\n let earliest = -1;\n let earliestLevel = 0;\n for (let level = 1; level <= 6; level++) {\n const idx = lc.indexOf(`<h${level}`, pos);\n if (idx !== -1 && (earliest === -1 || idx < earliest)) {\n earliest = idx;\n earliestLevel = level;\n }\n }\n if (earliest === -1) break;\n\n const contentStart = lc.indexOf('>', earliest);\n if (contentStart === -1) break;\n\n const closeTag = `</h${earliestLevel}>`;\n const closeIdx = lc.indexOf(closeTag, contentStart + 1);\n if (closeIdx === -1) {\n pos = contentStart + 1;\n continue;\n }\n\n headings.push({\n level: earliestLevel,\n text: stripHtml(html.slice(contentStart + 1, closeIdx)),\n });\n pos = closeIdx + closeTag.length;\n }\n\n return headings;\n}\n\nexport function checkHeadings(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { content, focusKeyphrase } = input;\n const headings = parseHeadings(content);\n\n // --- H1 & structure check ---\n const h1s = headings.filter((h) => h.level === 1);\n\n if (h1s.length === 0) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: 'No H1 heading found. Add exactly one H1 as the main heading of your page.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n } else if (h1s.length > 1) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: `Found ${h1s.length} H1 headings. Use exactly one H1 per page for proper SEO.`,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n // Check heading hierarchy\n let hasSkippedLevel = false;\n for (let i = 1; i < headings.length; i++) {\n const prev = headings[i - 1]!;\n const curr = headings[i]!;\n if (curr.level > prev.level + 1) {\n hasSkippedLevel = true;\n break;\n }\n }\n\n if (hasSkippedLevel) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description:\n 'The heading hierarchy skips levels (e.g., H2 to H4). Use sequential heading levels for better accessibility and SEO.',\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: 'The heading structure looks good with a single H1 and proper hierarchy.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n }\n\n // --- Keyphrase in headings check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const subheadings = headings.filter((h) => h.level >= 2);\n const hasKeyphraseInSubheading = subheadings.some((h) => h.text.toLowerCase().includes(kp));\n\n if (subheadings.length === 0) {\n results.push({\n id: 'heading-keyphrase',\n title: 'Keyphrase in subheadings',\n description:\n 'No subheadings (H2-H6) found. Add subheadings to structure your content and include the focus keyphrase.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n } else if (hasKeyphraseInSubheading) {\n results.push({\n id: 'heading-keyphrase',\n title: 'Keyphrase in subheadings',\n description: 'The focus keyphrase appears in at least one subheading. Nice!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'heading-keyphrase',\n title: 'Keyphrase in subheadings',\n description:\n 'The focus keyphrase does not appear in any subheading. Consider adding it to an H2 or H3.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// ============================================================================\n// @power-seo/content-analysis — Word Count Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { getWords, MIN_WORD_COUNT, RECOMMENDED_WORD_COUNT } from '@power-seo/core';\n\nexport function checkWordCount(input: ContentAnalysisInput): AnalysisResult {\n const words = getWords(input.content);\n const count = words.length;\n\n if (count < MIN_WORD_COUNT) {\n return {\n id: 'word-count',\n title: 'Word count',\n description: `The content is ${count} words, which is below the recommended minimum of ${MIN_WORD_COUNT}. Add more content to improve SEO.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n };\n }\n\n if (count < RECOMMENDED_WORD_COUNT) {\n return {\n id: 'word-count',\n title: 'Word count',\n description: `The content is ${count} words. Consider expanding to at least ${RECOMMENDED_WORD_COUNT} words for more comprehensive coverage.`,\n status: 'ok',\n score: 3,\n maxScore: 5,\n };\n }\n\n return {\n id: 'word-count',\n title: 'Word count',\n description: `The content is ${count} words. Good — this provides enough depth for search engines.`,\n status: 'good',\n score: 5,\n maxScore: 5,\n };\n}\n","// ============================================================================\n// @power-seo/content-analysis — Images Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\n\nexport function checkImages(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { images, focusKeyphrase } = input;\n\n if (!images || images.length === 0) {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description: 'No images found. Consider adding images to make your content more engaging.',\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n return results;\n }\n\n // --- Alt text check ---\n const missingAlt = images.filter((img) => !img.alt || img.alt.trim().length === 0);\n\n if (missingAlt.length === 0) {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description: 'All images have alt text. Great for accessibility and SEO!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else if (missingAlt.length === images.length) {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description:\n 'None of the images have alt text. Add descriptive alt attributes for accessibility and SEO.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description: `${missingAlt.length} of ${images.length} images are missing alt text. Add alt attributes to all images.`,\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n\n // --- Keyphrase in alt text check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const hasKeyphraseInAlt = images.some((img) => img.alt && img.alt.toLowerCase().includes(kp));\n\n if (hasKeyphraseInAlt) {\n results.push({\n id: 'image-keyphrase',\n title: 'Keyphrase in image alt',\n description: 'The focus keyphrase appears in at least one image alt attribute.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'image-keyphrase',\n title: 'Keyphrase in image alt',\n description:\n 'The focus keyphrase does not appear in any image alt attribute. Add it to at least one image.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// ============================================================================\n// @power-seo/content-analysis — Links Check\n// ============================================================================\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\n\nexport function checkLinks(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { internalLinks, externalLinks } = input;\n\n const hasInternal = internalLinks && internalLinks.length > 0;\n const hasExternal = externalLinks && externalLinks.length > 0;\n\n if (!hasInternal) {\n results.push({\n id: 'internal-links',\n title: 'Internal links',\n description:\n 'No internal links found. Add links to other pages on your site to improve crawlability and distribute link equity.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'internal-links',\n title: 'Internal links',\n description: `Found ${internalLinks!.length} internal link${internalLinks!.length === 1 ? '' : 's'}. Good for site structure and SEO.`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n if (!hasExternal) {\n results.push({\n id: 'external-links',\n title: 'External links',\n description:\n 'No external links found. Consider adding outbound links to authoritative sources to strengthen your content.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'external-links',\n title: 'External links',\n description: `Found ${externalLinks!.length} external link${externalLinks!.length === 1 ? '' : 's'}. Linking to quality sources adds credibility.`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n return results;\n}\n","// ============================================================================\n// @power-seo/content-analysis — Content Analyzer Orchestrator\n// ============================================================================\n\nimport type { ContentAnalysisInput, ContentAnalysisOutput, AnalysisResult } from '@power-seo/core';\nimport type { AnalysisConfig, CheckId } from './types.js';\nimport { checkTitle } from './checks/title.js';\nimport { checkMetaDescription } from './checks/meta-description.js';\nimport { checkKeyphraseUsage } from './checks/keyphrase-usage.js';\nimport { checkHeadings } from './checks/headings.js';\nimport { checkWordCount } from './checks/word-count.js';\nimport { checkImages } from './checks/images.js';\nimport { checkLinks } from './checks/links.js';\n\n/**\n * Run all SEO content analysis checks and return aggregated results.\n *\n * @example\n * ```ts\n * const output = analyzeContent({\n * title: 'My Blog Post',\n * metaDescription: 'A description of my blog post about SEO.',\n * content: '<h1>My Blog Post</h1><p>Content goes here...</p>',\n * focusKeyphrase: 'blog post',\n * });\n * console.log(output.score, output.maxScore, output.recommendations);\n * ```\n */\nexport function analyzeContent(\n input: ContentAnalysisInput,\n config?: AnalysisConfig,\n): ContentAnalysisOutput {\n const disabled = new Set<CheckId>(config?.disabledChecks ?? []);\n\n const allResults: AnalysisResult[] = [];\n\n // Run each check group and collect results\n const titleResults = checkTitle(input);\n const metaResults = checkMetaDescription(input);\n const keyphraseResults = checkKeyphraseUsage(input);\n const headingResults = checkHeadings(input);\n const wordCountResult = checkWordCount(input);\n const imageResults = checkImages(input);\n const linkResults = checkLinks(input);\n\n // Flatten all results\n const candidateResults = [\n ...titleResults,\n ...metaResults,\n ...keyphraseResults,\n ...headingResults,\n wordCountResult,\n ...imageResults,\n ...linkResults,\n ];\n\n // Filter out disabled checks\n for (const result of candidateResults) {\n if (!disabled.has(result.id as CheckId)) {\n allResults.push(result);\n }\n }\n\n // Sum scores\n const score = allResults.reduce((sum, r) => sum + r.score, 0);\n const maxScore = allResults.reduce((sum, r) => sum + r.maxScore, 0);\n\n // Generate recommendations from poor/ok results\n const recommendations = allResults\n .filter((r) => r.status === 'poor' || r.status === 'ok')\n .map((r) => r.description);\n\n return {\n score,\n maxScore,\n results: allResults,\n recommendations,\n 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{"version":3,"sources":["../src/react.ts","../src/checks/title.ts","../src/checks/meta-description.ts","../src/checks/keyphrase-usage.ts","../src/checks/headings.ts","../src/checks/word-count.ts","../src/checks/images.ts","../src/checks/links.ts","../src/analyzer.ts"],"sourcesContent":["// @power-seo/content-analysis — React Components\n// ----------------------------------------------------------------------------\n\nimport { createElement, useMemo } from 'react';\nimport type { ReactNode } from 'react';\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport type { AnalysisConfig } from './types.js';\nimport { analyzeContent } from './analyzer.js';\n\n// --- ScorePanel ---\n\nexport interface ScorePanelProps {\n score: number;\n maxScore: number;\n}\n\nfunction getScoreColor(percentage: number): string {\n if (percentage >= 70) return '#1e8e3e';\n if (percentage >= 40) return '#f29900';\n return '#d93025';\n}\n\nfunction getScoreLabel(percentage: number): string {\n if (percentage >= 70) return 'Good';\n if (percentage >= 40) return 'OK';\n return 'Needs improvement';\n}\n\n/**\n * Displays an overall SEO score as a colored bar with label.\n */\nexport function ScorePanel({ score, maxScore }: ScorePanelProps) {\n const percentage = maxScore > 0 ? 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'',\n ),\n createElement(\n 'div',\n { style: { flex: 1 } },\n createElement(\n 'div',\n {\n style: {\n fontWeight: 600,\n fontSize: '13px',\n color: STATUS_COLORS[result.status] ?? '#333',\n },\n },\n result.title,\n ),\n createElement(\n 'div',\n { style: { fontSize: '12px', color: '#555', marginTop: '2px' } },\n result.description,\n ),\n ),\n ),\n ),\n );\n}\n\n// --- ContentAnalyzer ---\n\nexport interface ContentAnalyzerProps {\n input: ContentAnalysisInput;\n config?: AnalysisConfig;\n children?: ReactNode;\n}\n\n/**\n * All-in-one component that runs analysis and renders score + check list.\n */\nexport function ContentAnalyzer({ input, config, children }: ContentAnalyzerProps) {\n const output = useMemo(() => analyzeContent(input, config), [input, config]);\n\n return createElement(\n 'div',\n {\n style: {\n fontFamily: 'system-ui, -apple-system, sans-serif',\n },\n },\n createElement(ScorePanel, { score: output.score, maxScore: output.maxScore }),\n createElement('div', { style: { height: '12px' } }),\n createElement(CheckList, { results: output.results }),\n children ?? null,\n );\n}\n","// @power-seo/content-analysis — Title Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { validateTitle } from '@power-seo/core';\n\nexport function checkTitle(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { title, focusKeyphrase } = input;\n\n // --- Presence & validity check ---\n if (!title || title.trim().length === 0) {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: 'No title has been set. Add a title to improve search visibility.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n return results;\n }\n\n const validation = validateTitle(title);\n\n if (!validation.valid) {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else if (validation.severity === 'warning') {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'title-presence',\n title: 'SEO title',\n description: validation.message,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n // --- Keyphrase in title check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const titleLower = title.toLowerCase();\n\n if (titleLower.includes(kp)) {\n results.push({\n id: 'title-keyphrase',\n title: 'Keyphrase in title',\n description: 'The focus keyphrase appears in the SEO title. Good job!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'title-keyphrase',\n title: 'Keyphrase in title',\n description:\n 'The focus keyphrase does not appear in the SEO title. Add it to improve relevance.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// @power-seo/content-analysis — Meta Description Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { validateMetaDescription } from '@power-seo/core';\n\nexport function checkMetaDescription(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { metaDescription, focusKeyphrase } = input;\n\n // --- Presence & validity check ---\n if (!metaDescription || metaDescription.trim().length === 0) {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description:\n 'No meta description has been set. Add one to control how your page appears in search results.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n return results;\n }\n\n const validation = validateMetaDescription(metaDescription);\n\n if (!validation.valid) {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else if (validation.severity === 'warning') {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'meta-description-presence',\n title: 'Meta description',\n description: validation.message,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n // --- Keyphrase in meta description check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const descLower = metaDescription.toLowerCase();\n\n if (descLower.includes(kp)) {\n results.push({\n id: 'meta-description-keyphrase',\n title: 'Keyphrase in meta description',\n description: 'The focus keyphrase appears in the meta description. Well done!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'meta-description-keyphrase',\n title: 'Keyphrase in meta description',\n description:\n 'The focus keyphrase does not appear in the meta description. 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Reduce usage to avoid keyword stuffing.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n });\n } else if (\n densityResult.density >= KEYWORD_DENSITY.MIN &&\n densityResult.density <= KEYWORD_DENSITY.MAX\n ) {\n const isOptimal = Math.abs(densityResult.density - KEYWORD_DENSITY.OPTIMAL) < 0.5;\n results.push({\n id: 'keyphrase-density',\n title: 'Keyphrase density',\n description: `Keyphrase density is ${densityResult.density}%.${isOptimal ? ' Great — this is close to the optimal density.' : ' This is within the recommended range.'}`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n // --- Distribution check ---\n const distributionPoints: string[] = [];\n if (!occurrences.inFirstParagraph) distributionPoints.push('introduction');\n if (!occurrences.inH1 && occurrences.inHeadings === 0) distributionPoints.push('headings');\n if (!occurrences.inSlug) distributionPoints.push('slug');\n if (occurrences.inAltText === 0 && images && images.length > 0)\n distributionPoints.push('image alt text');\n\n if (distributionPoints.length === 0) {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description:\n 'The focus keyphrase is well-distributed across the introduction, headings, slug, and image alt text.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else if (distributionPoints.length <= 2) {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description: `Consider adding the keyphrase to: ${distributionPoints.join(', ')}.`,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'keyphrase-distribution',\n title: 'Keyphrase distribution',\n description: `The keyphrase is missing from: ${distributionPoints.join(', ')}. Distribute it more broadly.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n });\n }\n\n return results;\n}\n","// @power-seo/content-analysis — Headings Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { stripHtml } from '@power-seo/core';\n\ninterface HeadingInfo {\n level: number;\n text: string;\n}\n\n/**\n * Parse all headings (h1-h6) from HTML using plain string search.\n * Avoids regex ReDoS on crafted inputs with many repeated heading-like tags.\n */\nfunction parseHeadings(html: string): HeadingInfo[] {\n const headings: HeadingInfo[] = [];\n const lc = html.toLowerCase();\n let pos = 0;\n\n while (pos < lc.length) {\n // Find the next heading tag of any level\n let earliest = -1;\n let earliestLevel = 0;\n for (let level = 1; level <= 6; level++) {\n const idx = lc.indexOf(`<h${level}`, pos);\n if (idx !== -1 && (earliest === -1 || idx < earliest)) {\n earliest = idx;\n earliestLevel = level;\n }\n }\n if (earliest === -1) break;\n\n const contentStart = lc.indexOf('>', earliest);\n if (contentStart === -1) break;\n\n const closeTag = `</h${earliestLevel}>`;\n const closeIdx = lc.indexOf(closeTag, contentStart + 1);\n if (closeIdx === -1) {\n pos = contentStart + 1;\n continue;\n }\n\n headings.push({\n level: earliestLevel,\n text: stripHtml(html.slice(contentStart + 1, closeIdx)),\n });\n pos = closeIdx + closeTag.length;\n }\n\n return headings;\n}\n\nexport function checkHeadings(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { content, focusKeyphrase } = input;\n const headings = parseHeadings(content);\n\n // --- H1 & structure check ---\n const h1s = headings.filter((h) => h.level === 1);\n\n if (h1s.length === 0) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: 'No H1 heading found. Add exactly one H1 as the main heading of your page.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n } else if (h1s.length > 1) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: `Found ${h1s.length} H1 headings. Use exactly one H1 per page for proper SEO.`,\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n // Check heading hierarchy\n let hasSkippedLevel = false;\n for (let i = 1; i < headings.length; i++) {\n const prev = headings[i - 1]!;\n const curr = headings[i]!;\n if (curr.level > prev.level + 1) {\n hasSkippedLevel = true;\n break;\n }\n }\n\n if (hasSkippedLevel) {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description:\n 'The heading hierarchy skips levels (e.g., H2 to H4). Use sequential heading levels for better accessibility and SEO.',\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'heading-structure',\n title: 'Heading structure',\n description: 'The heading structure looks good with a single H1 and proper hierarchy.',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n }\n\n // --- Keyphrase in headings check ---\n if (focusKeyphrase && focusKeyphrase.trim().length > 0) {\n const kp = focusKeyphrase.toLowerCase().trim();\n const subheadings = headings.filter((h) => h.level >= 2);\n const hasKeyphraseInSubheading = subheadings.some((h) => h.text.toLowerCase().includes(kp));\n\n if (subheadings.length === 0) {\n results.push({\n id: 'heading-keyphrase',\n title: 'Keyphrase in subheadings',\n description:\n 'No subheadings (H2-H6) found. 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Consider adding it to an H2 or H3.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// @power-seo/content-analysis — Word Count Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\nimport { getWords, MIN_WORD_COUNT, RECOMMENDED_WORD_COUNT } from '@power-seo/core';\n\nexport function checkWordCount(input: ContentAnalysisInput): AnalysisResult {\n const words = getWords(input.content);\n const count = words.length;\n\n if (count < MIN_WORD_COUNT) {\n return {\n id: 'word-count',\n title: 'Word count',\n description: `The content is ${count} words, which is below the recommended minimum of ${MIN_WORD_COUNT}. Add more content to improve SEO.`,\n status: 'poor',\n score: 1,\n maxScore: 5,\n };\n }\n\n if (count < RECOMMENDED_WORD_COUNT) {\n return {\n id: 'word-count',\n title: 'Word count',\n description: `The content is ${count} words. 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Consider adding images to make your content more engaging.',\n status: 'ok',\n score: 3,\n maxScore: 5,\n });\n return results;\n }\n\n // --- Alt text check ---\n const missingAlt = images.filter((img) => !img.alt || img.alt.trim().length === 0);\n\n if (missingAlt.length === 0) {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description: 'All images have alt text. Great for accessibility and SEO!',\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n } else if (missingAlt.length === images.length) {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description:\n 'None of the images have alt text. Add descriptive alt attributes for accessibility and SEO.',\n status: 'poor',\n score: 0,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'image-alt',\n title: 'Image alt attributes',\n description: `${missingAlt.length} of ${images.length} images are missing alt text. 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Add it to at least one image.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n }\n }\n\n return results;\n}\n","// @power-seo/content-analysis — Links Check\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, AnalysisResult } from '@power-seo/core';\n\nexport function checkLinks(input: ContentAnalysisInput): AnalysisResult[] {\n const results: AnalysisResult[] = [];\n const { internalLinks, externalLinks } = input;\n\n const hasInternal = internalLinks && internalLinks.length > 0;\n const hasExternal = externalLinks && externalLinks.length > 0;\n\n if (!hasInternal) {\n results.push({\n id: 'internal-links',\n title: 'Internal links',\n description:\n 'No internal links found. Add links to other pages on your site to improve crawlability and distribute link equity.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'internal-links',\n title: 'Internal links',\n description: `Found ${internalLinks!.length} internal link${internalLinks!.length === 1 ? '' : 's'}. Good for site structure and SEO.`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n if (!hasExternal) {\n results.push({\n id: 'external-links',\n title: 'External links',\n description:\n 'No external links found. Consider adding outbound links to authoritative sources to strengthen your content.',\n status: 'ok',\n score: 2,\n maxScore: 5,\n });\n } else {\n results.push({\n id: 'external-links',\n title: 'External links',\n description: `Found ${externalLinks!.length} external link${externalLinks!.length === 1 ? '' : 's'}. Linking to quality sources adds credibility.`,\n status: 'good',\n score: 5,\n maxScore: 5,\n });\n }\n\n return results;\n}\n","// @power-seo/content-analysis — Content Analyzer Orchestrator\n// ----------------------------------------------------------------------------\n\nimport type { ContentAnalysisInput, ContentAnalysisOutput, AnalysisResult } from '@power-seo/core';\nimport type { AnalysisConfig, CheckId } from './types.js';\nimport { checkTitle } from './checks/title.js';\nimport { checkMetaDescription } from './checks/meta-description.js';\nimport { checkKeyphraseUsage } from './checks/keyphrase-usage.js';\nimport { checkHeadings } from './checks/headings.js';\nimport { checkWordCount } from './checks/word-count.js';\nimport { checkImages } from './checks/images.js';\nimport { checkLinks } from './checks/links.js';\n\n/**\n * Run all SEO content analysis checks and return aggregated results.\n *\n * @example\n * ```ts\n * const output = analyzeContent({\n * title: 'My Blog Post',\n * metaDescription: 'A description of my blog post about SEO.',\n * content: '<h1>My Blog Post</h1><p>Content goes here...</p>',\n * focusKeyphrase: 'blog post',\n * });\n * console.log(output.score, output.maxScore, output.recommendations);\n * ```\n */\nexport function analyzeContent(\n input: ContentAnalysisInput,\n config?: AnalysisConfig,\n): ContentAnalysisOutput {\n const disabled = new Set<CheckId>(config?.disabledChecks ?? 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recommendations = allResults\n .filter((r) => r.status === 'poor' || r.status === 'ok')\n .map((r) => r.description);\n\n return {\n score,\n maxScore,\n results: allResults,\n recommendations,\n 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{
"name": "@power-seo/content-analysis",
"version": "1.0.7",
"version": "1.0.8",
"description": "Yoast-style SEO content analysis engine with scoring, checks, and React components",

@@ -25,14 +25,4 @@ "license": "MIT",

],
"scripts": {
"build": "tsup",
"dev": "tsup --watch",
"test": "vitest run",
"test:watch": "vitest",
"typecheck": "tsc --noEmit",
"lint": "eslint src/",
"lint:fix": "eslint src/ --fix",
"clean": "rimraf dist"
},
"dependencies": {
"@power-seo/core": "workspace:*"
"@power-seo/core": "1.0.3"
},

@@ -97,3 +87,13 @@ "peerDependencies": {

"url": "https://github.com/sponsors/cybercraftbd"
},
"scripts": {
"build": "tsup",
"dev": "tsup --watch",
"test": "vitest run",
"test:watch": "vitest",
"typecheck": "tsc --noEmit",
"lint": "eslint src/",
"lint:fix": "eslint src/ --fix",
"clean": "rimraf dist"
}
}
}
+71
-73

@@ -23,12 +23,12 @@ # @power-seo/content-analysis

| | Without | With |
| ----------------- | ----------------- | ------------------------------------------- |
| Keyphrase check | ❌ Manual grep | ✅ Density + distribution scoring |
| Title validation | ❌ Eye-check only | ✅ Presence, length, keyphrase match |
| Meta description | ❌ Unchecked | ✅ Length (120–160 chars) + keyphrase |
| Heading structure | ❌ Missed H1s | ✅ H1 hierarchy + keyphrase in subheadings |
| Image alt text | ❌ Skipped | ✅ Alt presence + keyphrase in alt |
| Link analysis | ❌ Unknown | ✅ Internal + external link presence |
| SEO score | ❌ Guesswork | ✅ Aggregate score with per-check breakdown |
| Framework support | ❌ WordPress-only | ✅ Next.js, Remix, Vite, Node.js, Edge |
| | Without | With |
|---|---|---|
| Keyphrase check | ❌ Manual grep | ✅ Density + distribution scoring |
| Title validation | ❌ Eye-check only | ✅ Presence, length, keyphrase match |
| Meta description | ❌ Unchecked | ✅ Length (120–160 chars) + keyphrase |
| Heading structure | ❌ Missed H1s | ✅ H1 hierarchy + keyphrase in subheadings |
| Image alt text | ❌ Skipped | ✅ Alt presence + keyphrase in alt |
| Link analysis | ❌ Unknown | ✅ Internal + external link presence |
| SEO score | ❌ Guesswork | ✅ Aggregate score with per-check breakdown |
| Framework support | ❌ WordPress-only | ✅ Next.js, Remix, Vite, Node.js, Edge |

@@ -64,16 +64,16 @@ ![SEO Score Dashboard](../../image/content-analysis/score-dashboard.svg)

| ------------------------------ | :-------------------------: | :-------: | :------: | :----------: | :----------: |
| Keyphrase density check | ✅ | ✅ | ❌ | Partial | ❌ |
| Keyphrase distribution | ✅ | ✅ | ❌ | ❌ | ❌ |
| Title + meta validation | ✅ | ✅ | ❌ | Partial | ❌ |
| Heading structure check | ✅ | ✅ | ❌ | ❌ | ❌ |
| Image alt + keyphrase check | ✅ | ✅ | ❌ | ❌ | ❌ |
| Internal / external link check | ✅ | ✅ | ❌ | ❌ | ❌ |
| Aggregate SEO score | ✅ | ✅ | ❌ | Partial | ❌ |
| Per-check disable config | ✅ | ❌ | ❌ | ❌ | ❌ |
| Works outside WordPress | ✅ | ❌ | ✅ | ✅ | ✅ |
| TypeScript-first | ✅ | ❌ | Partial | ❌ | ❌ |
| Tree-shakeable | ✅ | ❌ | Partial | ❌ | ❌ |
| React UI components | ✅ | ✅ | ❌ | ❌ | ❌ |
| CI / Node.js usage | ✅ | ❌ | ❌ | ✅ | ❌ |
| Zero runtime dependencies | ✅ | ❌ | ❌ | ❌ | ❌ |
| Keyphrase density check | ✅ | ✅ | ❌ | Partial | ❌ |
| Keyphrase distribution | ✅ | ✅ | ❌ | ❌ | ❌ |
| Title + meta validation | ✅ | ✅ | ❌ | Partial | ❌ |
| Heading structure check | ✅ | ✅ | ❌ | ❌ | ❌ |
| Image alt + keyphrase check | ✅ | ✅ | ❌ | ❌ | ❌ |
| Internal / external link check | ✅ | ✅ | ❌ | ❌ | ❌ |
| Aggregate SEO score | ✅ | ✅ | ❌ | Partial | ❌ |
| Per-check disable config | ✅ | ❌ | ❌ | ❌ | ❌ |
| Works outside WordPress | ✅ | ❌ | ✅ | ✅ | ✅ |
| TypeScript-first | ✅ | ❌ | Partial | ❌ | ❌ |
| Tree-shakeable | ✅ | ❌ | Partial | ❌ | ❌ |
| React UI components | ✅ | ✅ | ❌ | ❌ | ❌ |
| CI / Node.js usage | ✅ | ❌ | ❌ | ✅ | ❌ |
| Zero runtime dependencies | ✅ | ❌ | ❌ | ❌ | ❌ |

@@ -112,4 +112,4 @@ ![Keyword Density Analysis](../../image/content-analysis/keyword-density.svg)

console.log(result.score); // e.g. 38
console.log(result.maxScore); // e.g. 55
console.log(result.score); // e.g. 38
console.log(result.maxScore); // e.g. 55
console.log(result.results);

@@ -122,3 +122,2 @@ // [{ id: 'title-presence', status: 'good', description: '...', score: 5, maxScore: 5 }, ...]

**Status thresholds (per check):**
- `good` — check fully passes

@@ -141,4 +140,3 @@ - `ok` — check partially passes

title: 'Next.js SEO Best Practices',
metaDescription:
'Learn how to optimize your Next.js app for search engines with meta tags and structured data.',
metaDescription: 'Learn how to optimize your Next.js app for search engines with meta tags and structured data.',
focusKeyphrase: 'next.js seo',

@@ -247,6 +245,6 @@ content: htmlString,

| Import | Description |
| ----------------------------------- | -------------------------------------------- |
| `@power-seo/content-analysis` | Core analyzer and individual check functions |
| `@power-seo/content-analysis/react` | React components for analysis UI |
| Import | Description |
| --- | --- |
| `@power-seo/content-analysis` | Core analyzer and individual check functions |
| `@power-seo/content-analysis/react` | React components for analysis UI |

@@ -264,32 +262,32 @@ ### `analyzeContent()`

| Prop | Type | Required | Description |
| ----------------- | -------------------------------------- | -------- | ------------------------------------------- |
| `content` | `string` | ✅ | Body HTML string |
| `title` | `string` | — | Page `<title>` content |
| `metaDescription` | `string` | — | Meta description content |
| `focusKeyphrase` | `string` | — | Focus keyphrase to analyze against |
| `slug` | `string` | — | URL slug (used for keyphrase-in-slug check) |
| `images` | `Array<{ src: string; alt?: string }>` | — | Images found on the page |
| `internalLinks` | `string[]` | — | Internal link URLs |
| `externalLinks` | `string[]` | — | External link URLs |
| Prop | Type | Required | Description |
| ----------------- | -------------------------------------- | -------- | ---------------------------------------------- |
| `content` | `string` | ✅ | Body HTML string |
| `title` | `string` | — | Page `<title>` content |
| `metaDescription` | `string` | — | Meta description content |
| `focusKeyphrase` | `string` | — | Focus keyphrase to analyze against |
| `slug` | `string` | — | URL slug (used for keyphrase-in-slug check) |
| `images` | `Array<{ src: string; alt?: string }>` | — | Images found on the page |
| `internalLinks` | `string[]` | — | Internal link URLs |
| `externalLinks` | `string[]` | — | External link URLs |
#### `ContentAnalysisOutput`
| Field | Type | Description |
| ----------------- | ------------------ | ------------------------------------------------- |
| `score` | `number` | Sum of all individual check scores |
| `maxScore` | `number` | Maximum possible score (varies by enabled checks) |
| `results` | `AnalysisResult[]` | Per-check results |
| `recommendations` | `string[]` | Descriptions from all failed or partial checks |
| Field | Type | Description |
| ----------------- | ------------------ | ----------------------------------------------------- |
| `score` | `number` | Sum of all individual check scores |
| `maxScore` | `number` | Maximum possible score (varies by enabled checks) |
| `results` | `AnalysisResult[]` | Per-check results |
| `recommendations` | `string[]` | Descriptions from all failed or partial checks |
#### `AnalysisResult`
| Field | Type | Description |
| ------------- | ---------------- | ------------------------------------------------------ |
| `id` | `string` | Unique check identifier (one of the `CheckId` values) |
| `title` | `string` | Short display label for the check (e.g. `"SEO title"`) |
| `description` | `string` | Human-readable actionable feedback |
| `status` | `AnalysisStatus` | `'good'` \| `'ok'` \| `'poor'` |
| `score` | `number` | Points earned for this check |
| `maxScore` | `number` | Maximum points for this check |
| Field | Type | Description |
| ------------- | ---------------- | --------------------------------------------------------- |
| `id` | `string` | Unique check identifier (one of the `CheckId` values) |
| `title` | `string` | Short display label for the check (e.g. `"SEO title"`) |
| `description` | `string` | Human-readable actionable feedback |
| `status` | `AnalysisStatus` | `'good'` \| `'ok'` \| `'poor'` |
| `score` | `number` | Points earned for this check |
| `maxScore` | `number` | Maximum points for this check |

@@ -304,11 +302,11 @@ #### `AnalysisConfig`

| Function | Check ID(s) | Checks For |
| ----------------------------- | --------------------------------------------------------- | ----------------------------------------------------------------------------------------- |
| `checkTitle(input)` | `title-presence`, `title-keyphrase` | Title presence **and** length (50–60 chars, validated inside `title-presence`), keyphrase |
| `checkMetaDescription(input)` | `meta-description-presence`, `meta-description-keyphrase` | Description presence, length (120–160 chars), keyphrase |
| `checkKeyphraseUsage(input)` | `keyphrase-density`, `keyphrase-distribution` | Density (0.5–2.5%) and occurrence in key areas |
| `checkHeadings(input)` | `heading-structure`, `heading-keyphrase` | H1 presence, hierarchy, keyphrase in subheadings |
| `checkWordCount(input)` | `word-count` | Min 300 words (good at 1,000+) |
| `checkImages(input)` | `image-alt`, `image-keyphrase` | Alt text presence and keyphrase in alt |
| `checkLinks(input)` | `internal-links`, `external-links` | Internal and external link presence |
| Function | Check ID(s) | Checks For |
| ----------------------------- | -------------------------------------------------------------- | ------------------------------------------------------------------------------------------- |
| `checkTitle(input)` | `title-presence`, `title-keyphrase` | Title presence **and** length (50–60 chars, validated inside `title-presence`), keyphrase |
| `checkMetaDescription(input)` | `meta-description-presence`, `meta-description-keyphrase` | Description presence, length (120–160 chars), keyphrase |
| `checkKeyphraseUsage(input)` | `keyphrase-density`, `keyphrase-distribution` | Density (0.5–2.5%) and occurrence in key areas |
| `checkHeadings(input)` | `heading-structure`, `heading-keyphrase` | H1 presence, hierarchy, keyphrase in subheadings |
| `checkWordCount(input)` | `word-count` | Min 300 words (good at 1,000+) |
| `checkImages(input)` | `image-alt`, `image-keyphrase` | Alt text presence and keyphrase in alt |
| `checkLinks(input)` | `internal-links`, `external-links` | Internal and external link presence |

@@ -319,9 +317,9 @@ > **Note:** There is no separate `title-length` check ID. Title length validation (50–60 chars) is evaluated inside the `title-presence` check — a title that exists but is outside the recommended range returns `status: 'ok'` rather than `'good'`.

| Type | Description |
| ----------------------- | ------------------------------------------------------------------------ |
| `CheckId` | Union of all 13 built-in check IDs |
| `AnalysisConfig` | `{ disabledChecks?: CheckId[] }` |
| `AnalysisStatus` | `'good' \| 'ok' \| 'poor'` |
| `ContentAnalysisInput` | Input shape for `analyzeContent()` |
| `ContentAnalysisOutput` | Output shape from `analyzeContent()` |
| Type | Description |
| ----------------------- | --------------------------------------------------------- |
| `CheckId` | Union of all 13 built-in check IDs |
| `AnalysisConfig` | `{ disabledChecks?: CheckId[] }` |
| `AnalysisStatus` | `'good' \| 'ok' \| 'poor'` |
| `ContentAnalysisInput` | Input shape for `analyzeContent()` |
| `ContentAnalysisOutput` | Output shape from `analyzeContent()` |
| `AnalysisResult` | Single check result with id, title, description, status, score, maxScore |

@@ -328,0 +326,0 @@