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