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@lwc/compiler
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@lwc/compiler - npm Package Compare versions
Comparing version 6.6.3 to 7.0.0-alpha.0
@@ -214,3 +214,5 @@ /** | ||
| try { | ||
| result = templateCompiler.compile(src, { | ||
| result = templateCompiler.compile(src, filename, { | ||
| name, | ||
| namespace, | ||
| experimentalDynamicDirective, | ||
@@ -237,98 +239,11 @@ // TODO [#3370]: remove experimental template expression flag | ||
| const warnings = result.warnings.filter((_) => _.level === errors.DiagnosticLevel.Warning); | ||
| // TODO [#3733]: remove support for legacy scope tokens | ||
| const { scopeToken, legacyScopeToken } = generateScopeTokens(filename, namespace, name); | ||
| // Rollup only cares about the mappings property on the map. Since producing a source map for | ||
| // the template doesn't make sense, the transform returns an empty mappings. | ||
| return { | ||
| code: serialize(result.code, filename, scopeToken, legacyScopeToken, apiVersion), | ||
| code: result.code, | ||
| map: { mappings: '' }, | ||
| warnings, | ||
| cssScopeTokens: [ | ||
| scopeToken, | ||
| `${scopeToken}-host`, // implicit scope token created by `makeHostToken()` in `@lwc/engine-core` | ||
| // The legacy tokens must be returned as well since we technically don't know what we're going to render | ||
| // This is not strictly required since this is only used for Jest serialization (as of this writing), | ||
| // and people are unlikely to set runtime flags in Jest, but it is technically correct to include this. | ||
| legacyScopeToken, | ||
| `${legacyScopeToken}-host`, | ||
| ], | ||
| cssScopeTokens: result.cssScopeTokens, | ||
| }; | ||
| } | ||
| // The reason this hash code implementation [1] is chosen is because: | ||
| // 1. It has a very low hash collision rate - testing a list of 466,551 English words [2], it generates no collisions | ||
| // 2. It is fast - it can hash those 466k words in 70ms (Node 16, 2020 MacBook Pro) | ||
| // 3. The output size is reasonable (32-bit - this can be base-32 encoded at 10-11 characters) | ||
| // | ||
| // Also note that the reason we're hashing rather than generating a random number is because | ||
| // we want the output to be predictable given the input, which helps with caching. | ||
| // | ||
| // [1]: https://stackoverflow.com/a/52171480 | ||
| // [2]: https://github.com/dwyl/english-words/blob/a77cb15f4f5beb59c15b945f2415328a6b33c3b0/words.txt | ||
| function generateHashCode(str) { | ||
| const seed = 0; | ||
| let h1 = 0xdeadbeef ^ seed; | ||
| let h2 = 0x41c6ce57 ^ seed; | ||
| for (let i = 0, ch; i < str.length; i++) { | ||
| ch = str.charCodeAt(i); | ||
| h1 = Math.imul(h1 ^ ch, 2654435761); | ||
| h2 = Math.imul(h2 ^ ch, 1597334677); | ||
| } | ||
| h1 = Math.imul(h1 ^ (h1 >>> 16), 2246822507); | ||
| h1 ^= Math.imul(h2 ^ (h2 >>> 13), 3266489909); | ||
| h2 = Math.imul(h2 ^ (h2 >>> 16), 2246822507); | ||
| h2 ^= Math.imul(h1 ^ (h1 >>> 13), 3266489909); | ||
| return 4294967296 * (2097151 & h2) + (h1 >>> 0); | ||
| } | ||
| function escapeScopeToken(input) { | ||
| // Minimal escape for strings containing the "@" and "#" characters, which are disallowed | ||
| // in certain cases in attribute names | ||
| return input.replace(/@/g, '___at___').replace(/#/g, '___hash___'); | ||
| } | ||
| function generateScopeTokens(filename, namespace, name) { | ||
| const uniqueToken = `${namespace}-${name}_${path__namespace.basename(filename, path__namespace.extname(filename))}`; | ||
| // This scope token is all lowercase so that it works correctly in case-sensitive namespaces (e.g. SVG). | ||
| // It is deliberately designed to discourage people from relying on it by appearing somewhat random. | ||
| // (But not totally random, because it's nice to have stable scope tokens for our own tests.) | ||
| // Base-32 is chosen because it is not case-sensitive (0-v), and generates short strings with the given hash | ||
| // code implementation (10-11 characters). | ||
| const hashCode = generateHashCode(uniqueToken); | ||
| const scopeToken = `lwc-${hashCode.toString(32)}`; | ||
| // This scope token is based on the namespace and name, and contains a mix of uppercase/lowercase chars | ||
| const legacyScopeToken = escapeScopeToken(uniqueToken); | ||
| return { | ||
| scopeToken, | ||
| legacyScopeToken, | ||
| }; | ||
| } | ||
| function serialize(code, filename, scopeToken, legacyScopeToken, apiVersion) { | ||
| const cssRelPath = `./${path__namespace.basename(filename, path__namespace.extname(filename))}.css`; | ||
| const scopedCssRelPath = `./${path__namespace.basename(filename, path__namespace.extname(filename))}.scoped.css`; | ||
| let buffer = ''; | ||
| buffer += `import { freezeTemplate } from "lwc";\n\n`; | ||
| buffer += `import _implicitStylesheets from "${cssRelPath}";\n\n`; | ||
| buffer += `import _implicitScopedStylesheets from "${scopedCssRelPath}?scoped=true";\n\n`; | ||
| buffer += code; | ||
| buffer += '\n\n'; | ||
| buffer += 'if (_implicitStylesheets) {\n'; | ||
| buffer += ` tmpl.stylesheets.push.apply(tmpl.stylesheets, _implicitStylesheets);\n`; | ||
| buffer += `}\n`; | ||
| buffer += 'if (_implicitScopedStylesheets) {\n'; | ||
| buffer += ` tmpl.stylesheets.push.apply(tmpl.stylesheets, _implicitScopedStylesheets);\n`; | ||
| buffer += `}\n`; | ||
| if (shared.isAPIFeatureEnabled(0 /* APIFeature.LOWERCASE_SCOPE_TOKENS */, apiVersion)) { | ||
| // Include both the new and legacy tokens, so that the runtime can decide based on a flag whether | ||
| // we need to render the legacy one. This is designed for cases where the legacy one is required | ||
| // for backwards compat (e.g. global stylesheets that rely on the legacy format for a CSS selector). | ||
| buffer += `tmpl.stylesheetToken = "${scopeToken}";\n`; | ||
| buffer += `tmpl.legacyStylesheetToken = "${legacyScopeToken}";\n`; | ||
| } | ||
| else { | ||
| // In old API versions, we can just keep doing what we always did | ||
| buffer += `tmpl.stylesheetToken = "${legacyScopeToken}";\n`; | ||
| } | ||
| // Note that `renderMode` and `slots` are already rendered in @lwc/template-compiler and appear | ||
| // as `code` above. At this point, no more expando props should be added to `tmpl`. | ||
| buffer += 'freezeTemplate(tmpl);\n'; | ||
| return buffer; | ||
| } | ||
@@ -499,3 +414,3 @@ /* | ||
| /** The version of LWC being used. */ | ||
| const version = "6.6.3"; | ||
| const version = "7.0.0-alpha.0"; | ||
@@ -505,3 +420,3 @@ exports.transform = transform; | ||
| exports.version = version; | ||
| /** version: 6.6.3 */ | ||
| /** version: 7.0.0-alpha.0 */ | ||
| //# sourceMappingURL=index.cjs.js.map |
@@ -189,3 +189,5 @@ /** | ||
| try { | ||
| result = compile(src, { | ||
| result = compile(src, filename, { | ||
| name, | ||
| namespace, | ||
| experimentalDynamicDirective, | ||
@@ -212,98 +214,11 @@ // TODO [#3370]: remove experimental template expression flag | ||
| const warnings = result.warnings.filter((_) => _.level === DiagnosticLevel.Warning); | ||
| // TODO [#3733]: remove support for legacy scope tokens | ||
| const { scopeToken, legacyScopeToken } = generateScopeTokens(filename, namespace, name); | ||
| // Rollup only cares about the mappings property on the map. Since producing a source map for | ||
| // the template doesn't make sense, the transform returns an empty mappings. | ||
| return { | ||
| code: serialize(result.code, filename, scopeToken, legacyScopeToken, apiVersion), | ||
| code: result.code, | ||
| map: { mappings: '' }, | ||
| warnings, | ||
| cssScopeTokens: [ | ||
| scopeToken, | ||
| `${scopeToken}-host`, // implicit scope token created by `makeHostToken()` in `@lwc/engine-core` | ||
| // The legacy tokens must be returned as well since we technically don't know what we're going to render | ||
| // This is not strictly required since this is only used for Jest serialization (as of this writing), | ||
| // and people are unlikely to set runtime flags in Jest, but it is technically correct to include this. | ||
| legacyScopeToken, | ||
| `${legacyScopeToken}-host`, | ||
| ], | ||
| cssScopeTokens: result.cssScopeTokens, | ||
| }; | ||
| } | ||
| // The reason this hash code implementation [1] is chosen is because: | ||
| // 1. It has a very low hash collision rate - testing a list of 466,551 English words [2], it generates no collisions | ||
| // 2. It is fast - it can hash those 466k words in 70ms (Node 16, 2020 MacBook Pro) | ||
| // 3. The output size is reasonable (32-bit - this can be base-32 encoded at 10-11 characters) | ||
| // | ||
| // Also note that the reason we're hashing rather than generating a random number is because | ||
| // we want the output to be predictable given the input, which helps with caching. | ||
| // | ||
| // [1]: https://stackoverflow.com/a/52171480 | ||
| // [2]: https://github.com/dwyl/english-words/blob/a77cb15f4f5beb59c15b945f2415328a6b33c3b0/words.txt | ||
| function generateHashCode(str) { | ||
| const seed = 0; | ||
| let h1 = 0xdeadbeef ^ seed; | ||
| let h2 = 0x41c6ce57 ^ seed; | ||
| for (let i = 0, ch; i < str.length; i++) { | ||
| ch = str.charCodeAt(i); | ||
| h1 = Math.imul(h1 ^ ch, 2654435761); | ||
| h2 = Math.imul(h2 ^ ch, 1597334677); | ||
| } | ||
| h1 = Math.imul(h1 ^ (h1 >>> 16), 2246822507); | ||
| h1 ^= Math.imul(h2 ^ (h2 >>> 13), 3266489909); | ||
| h2 = Math.imul(h2 ^ (h2 >>> 16), 2246822507); | ||
| h2 ^= Math.imul(h1 ^ (h1 >>> 13), 3266489909); | ||
| return 4294967296 * (2097151 & h2) + (h1 >>> 0); | ||
| } | ||
| function escapeScopeToken(input) { | ||
| // Minimal escape for strings containing the "@" and "#" characters, which are disallowed | ||
| // in certain cases in attribute names | ||
| return input.replace(/@/g, '___at___').replace(/#/g, '___hash___'); | ||
| } | ||
| function generateScopeTokens(filename, namespace, name) { | ||
| const uniqueToken = `${namespace}-${name}_${path.basename(filename, path.extname(filename))}`; | ||
| // This scope token is all lowercase so that it works correctly in case-sensitive namespaces (e.g. SVG). | ||
| // It is deliberately designed to discourage people from relying on it by appearing somewhat random. | ||
| // (But not totally random, because it's nice to have stable scope tokens for our own tests.) | ||
| // Base-32 is chosen because it is not case-sensitive (0-v), and generates short strings with the given hash | ||
| // code implementation (10-11 characters). | ||
| const hashCode = generateHashCode(uniqueToken); | ||
| const scopeToken = `lwc-${hashCode.toString(32)}`; | ||
| // This scope token is based on the namespace and name, and contains a mix of uppercase/lowercase chars | ||
| const legacyScopeToken = escapeScopeToken(uniqueToken); | ||
| return { | ||
| scopeToken, | ||
| legacyScopeToken, | ||
| }; | ||
| } | ||
| function serialize(code, filename, scopeToken, legacyScopeToken, apiVersion) { | ||
| const cssRelPath = `./${path.basename(filename, path.extname(filename))}.css`; | ||
| const scopedCssRelPath = `./${path.basename(filename, path.extname(filename))}.scoped.css`; | ||
| let buffer = ''; | ||
| buffer += `import { freezeTemplate } from "lwc";\n\n`; | ||
| buffer += `import _implicitStylesheets from "${cssRelPath}";\n\n`; | ||
| buffer += `import _implicitScopedStylesheets from "${scopedCssRelPath}?scoped=true";\n\n`; | ||
| buffer += code; | ||
| buffer += '\n\n'; | ||
| buffer += 'if (_implicitStylesheets) {\n'; | ||
| buffer += ` tmpl.stylesheets.push.apply(tmpl.stylesheets, _implicitStylesheets);\n`; | ||
| buffer += `}\n`; | ||
| buffer += 'if (_implicitScopedStylesheets) {\n'; | ||
| buffer += ` tmpl.stylesheets.push.apply(tmpl.stylesheets, _implicitScopedStylesheets);\n`; | ||
| buffer += `}\n`; | ||
| if (isAPIFeatureEnabled(0 /* APIFeature.LOWERCASE_SCOPE_TOKENS */, apiVersion)) { | ||
| // Include both the new and legacy tokens, so that the runtime can decide based on a flag whether | ||
| // we need to render the legacy one. This is designed for cases where the legacy one is required | ||
| // for backwards compat (e.g. global stylesheets that rely on the legacy format for a CSS selector). | ||
| buffer += `tmpl.stylesheetToken = "${scopeToken}";\n`; | ||
| buffer += `tmpl.legacyStylesheetToken = "${legacyScopeToken}";\n`; | ||
| } | ||
| else { | ||
| // In old API versions, we can just keep doing what we always did | ||
| buffer += `tmpl.stylesheetToken = "${legacyScopeToken}";\n`; | ||
| } | ||
| // Note that `renderMode` and `slots` are already rendered in @lwc/template-compiler and appear | ||
| // as `code` above. At this point, no more expando props should be added to `tmpl`. | ||
| buffer += 'freezeTemplate(tmpl);\n'; | ||
| return buffer; | ||
| } | ||
@@ -474,6 +389,6 @@ /* | ||
| /** The version of LWC being used. */ | ||
| const version = "6.6.3"; | ||
| const version = "7.0.0-alpha.0"; | ||
| export { transform, transformSync, version }; | ||
| /** version: 6.6.3 */ | ||
| /** version: 7.0.0-alpha.0 */ | ||
| //# sourceMappingURL=index.js.map |
@@ -18,4 +18,24 @@ # LWC core license | ||
| MIT license defined in package.json in v0.4.0. | ||
| The MIT License (MIT) | ||
| Copyright © 2024 James Garbutt | ||
| 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 | ||
| AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| 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. | ||
| ## entities | ||
@@ -22,0 +42,0 @@ |
@@ -7,3 +7,3 @@ { | ||
| "name": "@lwc/compiler", | ||
| "version": "6.6.3", | ||
| "version": "7.0.0-alpha.0", | ||
| "description": "LWC compiler", | ||
@@ -46,3 +46,3 @@ "keywords": [ | ||
| "dependencies": { | ||
| "@babel/core": "7.24.4", | ||
| "@babel/core": "7.24.5", | ||
| "@babel/plugin-transform-async-generator-functions": "7.24.3", | ||
@@ -53,9 +53,9 @@ "@babel/plugin-transform-async-to-generator": "7.24.1", | ||
| "@locker/babel-plugin-transform-unforgeables": "0.20.0", | ||
| "@lwc/babel-plugin-component": "6.6.3", | ||
| "@lwc/errors": "6.6.3", | ||
| "@lwc/shared": "6.6.3", | ||
| "@lwc/ssr-compiler": "6.6.3", | ||
| "@lwc/style-compiler": "6.6.3", | ||
| "@lwc/template-compiler": "6.6.3" | ||
| "@lwc/babel-plugin-component": "7.0.0-alpha.0", | ||
| "@lwc/errors": "7.0.0-alpha.0", | ||
| "@lwc/shared": "7.0.0-alpha.0", | ||
| "@lwc/ssr-compiler": "7.0.0-alpha.0", | ||
| "@lwc/style-compiler": "7.0.0-alpha.0", | ||
| "@lwc/template-compiler": "7.0.0-alpha.0" | ||
| } | ||
| } | ||
| } |
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New alerts
License Policy Violation
LicenseThis package is not allowed per your license policy. Review the package's license to ensure compliance.
Found 1 instance in 1 package
No v1
QualityPackage is not semver >=1. This means it is not stable and does not support ^ ranges.
Found 1 instance in 1 package
Fixed alerts
License Policy Violation
LicenseThis package is not allowed per your license policy. Review the package's license to ensure compliance.
Found 1 instance in 1 package
Worsened metrics
- Total package byte prevSize
- decreased by-17.37%
69472
- Lines of code
- decreased by-14.52%
1001
- Number of low quality alerts
- increased byInfinity%
1
Dependency changes
+ Added@babel/core@7.24.5(transitive)
+ Added@lwc/babel-plugin-component@7.0.0-alpha.0(transitive)
+ Added@lwc/errors@7.0.0-alpha.0(transitive)
+ Added@lwc/shared@7.0.0-alpha.0(transitive)
+ Added@lwc/ssr-compiler@7.0.0-alpha.0(transitive)
+ Added@lwc/style-compiler@7.0.0-alpha.0(transitive)
+ Added@lwc/template-compiler@7.0.0-alpha.0(transitive)
- Removed@babel/core@7.24.4(transitive)
- Removed@lwc/babel-plugin-component@6.6.3(transitive)
- Removed@lwc/errors@6.6.3(transitive)
- Removed@lwc/shared@6.6.3(transitive)
- Removed@lwc/ssr-compiler@6.6.3(transitive)
- Removed@lwc/style-compiler@6.6.3(transitive)
- Removed@lwc/template-compiler@6.6.3(transitive)
Updated@babel/core@7.24.5
Updated@lwc/errors@7.0.0-alpha.0
Updated@lwc/shared@7.0.0-alpha.0