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@github-docs/frontmatter
Advanced tools
Parse and validate YAML frontmatter
This is a frontmatter parser built on gray-matter
that supports optional frontmatter validation using a revalidator JSON schema.
This is a Node.js module available through the npm registry.
npm install @github-docs/frontmatter
enum
.validateKeyOrder
validateKeyNames
const frontmatter = require('@github-docs/frontmatter')
const schema = {
properties: {
title: {
type: 'string',
required: true
},
meaning_of_life: {
type: 'number',
minimum: 40,
maximum: 50
}
}
}
const markdown = `---
title: Hello, World
meaning_of_life: 42
---
I am content.
`
const { data, content, errors } = frontmatter(markdown)
frontmatter(markdown, [options])
Parses a string containing markdown and (optional) frontmatter.
markdown
String (required) - the contents of a markdown file that includes YAML frontmatter.options
Object (optional)
schema
Object - A revalidator JSON schema.filepath
String - The name of the file being parsed. Useful for debugging when errors occur.validateKeyNames
Boolean - If true
, checks that all keys are specified as schema properties. Defaults to false
validateKeyOrder
Boolean - If true
, checks that all keys are in the same order they appear in the schema. Defaults to false
frontmatter.stringify(markdown, [data], [opts])
This is the same stringify
method exported by the gray-matter
module, which can be used to join a markdown string and a frontmatter object together as a single string.
file
StringObject - The content string to append to stringified front-matter, or a file object with file.content string.data
Object - Front matter to stringify.options
Object - Options to pass to gray-matter and js-yaml.returns
String - Returns a string created by wrapping stringified yaml with delimiters, and appending that to the given string.MIT
FAQs
Parse and validate YAML frontmatter
The npm package @github-docs/frontmatter receives a total of 662 weekly downloads. As such, @github-docs/frontmatter popularity was classified as not popular.
We found that @github-docs/frontmatter demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 2 open source maintainers collaborating on the project.
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