66 lines
1.6 KiB
JavaScript
66 lines
1.6 KiB
JavaScript
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'use strict';
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var css = require('css');
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var acorn = require('acorn');
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var SourceMapGenerator = require('source-map').SourceMapGenerator;
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function generateJs(sourcePath, fileContent) {
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var generator = new SourceMapGenerator({ file: sourcePath });
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var tokenizer = acorn.tokenizer(fileContent, { allowHashBang: true, locations: true });
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while (true) {
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var token = tokenizer.getToken();
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if (token.type.label === 'eof') {
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break;
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}
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var mapping = {
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original: token.loc.start,
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generated: token.loc.start,
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source: sourcePath,
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};
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if (token.type.label === 'name') {
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mapping.name = token.value;
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}
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generator.addMapping(mapping);
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}
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generator.setSourceContent(sourcePath, fileContent);
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return generator.toJSON();
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}
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function generateCss(sourcePath, fileContent) {
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var generator = new SourceMapGenerator({ file: sourcePath });
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var ast = css.parse(fileContent, { silent: true });
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function registerTokens(ast) {
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if (ast.position) {
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generator.addMapping({
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original: ast.position.start,
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generated: ast.position.start,
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source: sourcePath,
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});
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}
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for (var key in ast) {
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if (key === 'position' || !ast[key]) {
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continue;
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}
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if (Object.prototype.toString.call(ast[key]) === '[object Object]') {
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registerTokens(ast[key]);
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} else if (Array.isArray(ast[key])) {
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ast[key].forEach(registerTokens);
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}
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}
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}
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registerTokens(ast);
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generator.setSourceContent(sourcePath, fileContent);
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return generator.toJSON();
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}
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module.exports = {
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js: generateJs,
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css: generateCss,
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};
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