62 lines
2 KiB
JavaScript
62 lines
2 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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const source_map_1 = require("source-map");
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const hash = require('hash-sum');
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const cache = require('lru-cache')(100);
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const splitRE = /\r?\n/g;
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const emptyRE = /^(?:\/\/)?\s*$/;
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function parse(options) {
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const { source, filename = '', compiler, compilerParseOptions = { pad: 'line' }, sourceRoot = '', needMap = true } = options;
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const cacheKey = hash(filename + source);
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let output = cache.get(cacheKey);
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if (output)
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return output;
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output = compiler.parseComponent(source, compilerParseOptions);
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if (needMap) {
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if (output.script && !output.script.src) {
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output.script.map = generateSourceMap(filename, source, output.script.content, sourceRoot, compilerParseOptions.pad);
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}
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if (output.styles) {
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output.styles.forEach(style => {
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if (!style.src) {
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style.map = generateSourceMap(filename, source, style.content, sourceRoot, compilerParseOptions.pad);
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}
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});
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}
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}
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cache.set(cacheKey, output);
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return output;
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}
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exports.parse = parse;
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function generateSourceMap(filename, source, generated, sourceRoot, pad) {
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const map = new source_map_1.SourceMapGenerator({
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file: filename.replace(/\\/g, '/'),
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sourceRoot: sourceRoot.replace(/\\/g, '/')
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});
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let offset = 0;
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if (!pad) {
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offset =
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source
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.split(generated)
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.shift()
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.split(splitRE).length - 1;
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}
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map.setSourceContent(filename, source);
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generated.split(splitRE).forEach((line, index) => {
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if (!emptyRE.test(line)) {
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map.addMapping({
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source: filename,
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original: {
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line: index + 1 + offset,
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column: 0
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},
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generated: {
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line: index + 1,
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column: 0
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}
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});
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}
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});
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return JSON.parse(map.toString());
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}
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