43 lines
1.2 KiB
JavaScript
43 lines
1.2 KiB
JavaScript
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/**
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* @typedef {import('estree-jsx').Program} Program
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* @typedef {typeof import('source-map').SourceMapGenerator} SourceMapGenerator
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*
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* @typedef RecmaStringifyOptions
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* Configuration for internal plugin `recma-stringify`.
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* @property {SourceMapGenerator | null | undefined} [SourceMapGenerator]
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* Generate a source map by passing a `SourceMapGenerator` from `source-map`
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* in.
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*/
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import {toJs, jsx} from 'estree-util-to-js'
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/**
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* A plugin that adds an esast compiler: a small wrapper around `astring` to add
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* support for serializing JSX.
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*
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* @this {import('unified').Processor}
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* @type {import('unified').Plugin<[RecmaStringifyOptions | null | undefined] | [], Program, string>}
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*/
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export function recmaStringify(options) {
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// Always given inside `@mdx-js/mdx`
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/* c8 ignore next */
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const {SourceMapGenerator} = options || {}
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Object.assign(this, {Compiler: compiler})
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/** @type {import('unified').CompilerFunction<Program, string>} */
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function compiler(tree, file) {
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const result = SourceMapGenerator
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? toJs(tree, {
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filePath: file.path || 'unknown.mdx',
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SourceMapGenerator,
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handlers: jsx
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})
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: toJs(tree, {handlers: jsx})
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file.map = result.map
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return result.value
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}
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}
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