61 lines
1.9 KiB
Plaintext
61 lines
1.9 KiB
Plaintext
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// @flow
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import type { VLQMap, SourceMapStringifyOptions } from './types';
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import path from 'path';
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export function generateInlineMap(map: string): string {
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return `data:application/json;charset=utf-8;base64,${Buffer.from(map).toString('base64')}`;
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}
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export async function partialVlqMapToSourceMap(map: VLQMap, opts: SourceMapStringifyOptions): Promise<VLQMap | string> {
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let { fs, file, sourceRoot, inlineSources, rootDir, format = 'string' } = opts;
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let resultMap = {
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...map,
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sourcesContent: map.sourcesContent
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? map.sourcesContent.map((content) => {
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if (content) {
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return content;
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} else {
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return null;
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}
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})
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: [],
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version: 3,
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file,
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sourceRoot,
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};
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if (resultMap.sourcesContent.length < resultMap.sources.length) {
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for (let i = 0; i <= resultMap.sources.length - resultMap.sourcesContent.length; i++) {
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resultMap.sourcesContent.push(null);
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}
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}
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if (fs) {
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resultMap.sourcesContent = await Promise.all(
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resultMap.sourcesContent.map(async (content, index): Promise<string | null> => {
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let sourceName = map.sources[index];
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// If sourceName starts with `..` it is outside rootDir, in this case we likely cannot access this file from the browser or packaged node_module
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// Because of this we have to include the sourceContent to ensure you can always see the sourcecontent for each mapping.
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if (!content && (inlineSources || sourceName.startsWith('..'))) {
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try {
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return await fs.readFile(path.resolve(rootDir || '/', sourceName), 'utf-8');
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} catch (e) {}
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}
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return content;
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})
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);
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}
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if (format === 'inline' || format === 'string') {
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let stringifiedMap = JSON.stringify(resultMap);
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if (format === 'inline') {
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return generateInlineMap(stringifiedMap);
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}
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return stringifiedMap;
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}
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return resultMap;
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}
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