60 lines
1.4 KiB
TypeScript
60 lines
1.4 KiB
TypeScript
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import { SourceMapGenerator } from 'source-map-js'
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import type { DecodedSource, DecodedSourceMap } from '../../tailwindcss/src/source-maps/source-map'
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import { DefaultMap } from '../../tailwindcss/src/utils/default-map'
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export type { DecodedSource, DecodedSourceMap }
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export interface SourceMap {
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readonly raw: string
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readonly inline: string
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}
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function serializeSourceMap(map: DecodedSourceMap): string {
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let generator = new SourceMapGenerator()
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let id = 1
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let sourceTable = new DefaultMap<
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DecodedSource | null,
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{
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url: string
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content: string
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}
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>((src) => {
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return {
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url: src?.url ?? `<unknown ${id}>`,
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content: src?.content ?? '<none>',
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}
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})
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for (let mapping of map.mappings) {
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let original = sourceTable.get(mapping.originalPosition?.source ?? null)
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generator.addMapping({
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generated: mapping.generatedPosition,
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original: mapping.originalPosition,
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source: original.url,
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name: mapping.name,
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})
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generator.setSourceContent(original.url, original.content)
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}
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return generator.toString()
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}
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export function toSourceMap(map: DecodedSourceMap | string): SourceMap {
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let raw = typeof map === 'string' ? map : serializeSourceMap(map)
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return {
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raw,
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get inline() {
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let tmp = ''
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tmp += '/*# sourceMappingURL=data:application/json;base64,'
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tmp += Buffer.from(raw, 'utf-8').toString('base64')
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tmp += ' */\n'
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return tmp
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},
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}
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}
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