92 lines
2.6 KiB
JavaScript
92 lines
2.6 KiB
JavaScript
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/**
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* @typedef {import('unified').Processor} Processor
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* @typedef {import('vfile').VFile} VFile
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* @typedef {import('vfile').VFileCompatible} VFileCompatible
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* @typedef {import('../compile.js').CompileOptions} CompileOptions
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*/
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import {createProcessor} from '../core.js'
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import {md, mdx} from './extnames.js'
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import {resolveFileAndOptions} from './resolve-file-and-options.js'
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/**
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* Create smart processors to handle different formats.
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*
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* @param {CompileOptions | null | undefined} [compileOptions]
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* configuration.
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* @return {{extnames: Array<string>, process: process, processSync: processSync}}
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* Smart processor.
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*/
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export function createFormatAwareProcessors(compileOptions) {
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const compileOptions_ = compileOptions || {}
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const mdExtensions = compileOptions_.mdExtensions || md
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const mdxExtensions = compileOptions_.mdxExtensions || mdx
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/** @type {Processor} */
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let cachedMarkdown
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/** @type {Processor} */
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let cachedMdx
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return {
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extnames:
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compileOptions_.format === 'md'
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? mdExtensions
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: compileOptions_.format === 'mdx'
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? mdxExtensions
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: mdExtensions.concat(mdxExtensions),
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process,
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processSync
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}
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/**
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* Smart processor.
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*
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* @param {VFileCompatible} vfileCompatible
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* MDX or markdown document.
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* @return {Promise<VFile>}
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* File.
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*/
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function process(vfileCompatible) {
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const {file, processor} = split(vfileCompatible)
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return processor.process(file)
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}
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/**
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* Sync smart processor.
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*
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* @param {VFileCompatible} vfileCompatible
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* MDX or markdown document.
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* @return {VFile}
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* File.
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*/
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// C8 does not cover `.cjs` files (this is only used for the require hook,
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// which has to be CJS).
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/* c8 ignore next 4 */
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function processSync(vfileCompatible) {
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const {file, processor} = split(vfileCompatible)
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return processor.processSync(file)
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}
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/**
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* Make a full vfile from what’s given, and figure out which processor
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* should be used for it.
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* This caches processors (one for markdown and one for MDX) so that they do
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* not have to be reconstructed for each file.
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*
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* @param {VFileCompatible} vfileCompatible
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* MDX or markdown document.
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* @return {{file: VFile, processor: Processor}}
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* File and corresponding processor.
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*/
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function split(vfileCompatible) {
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const {file, options} = resolveFileAndOptions(
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vfileCompatible,
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compileOptions_
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)
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const processor =
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options.format === 'md'
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? cachedMarkdown || (cachedMarkdown = createProcessor(options))
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: cachedMdx || (cachedMdx = createProcessor(options))
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return {file, processor}
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}
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}
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