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96 lines
2.7 KiB
JavaScript
96 lines
2.7 KiB
JavaScript
#! /usr/bin/env node
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/* eslint-disable no-console, no-var */
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// Util script for debugging source code generation issues
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var script = process.argv[2].replace(/\\n/g, '\n'),
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verbose = process.argv[3] === '-v';
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var Handlebars = require('./lib'),
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SourceMap = require('source-map'),
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SourceMapConsumer = SourceMap.SourceMapConsumer;
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var template = Handlebars.precompile(script, {
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srcName: 'input.hbs',
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destName: 'output.js',
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assumeObjects: true,
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compat: false,
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strict: true,
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trackIds: true,
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knownHelpersOnly: false
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});
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if (!verbose) {
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console.log(template);
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} else {
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var consumer = new SourceMapConsumer(template.map),
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lines = template.code.split('\n'),
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srcLines = script.split('\n');
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console.log();
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console.log('Source:');
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srcLines.forEach(function(source, index) {
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console.log(index + 1, source);
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});
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console.log();
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console.log('Generated:');
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console.log(template.code);
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lines.forEach(function(source, index) {
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console.log(index + 1, source);
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});
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console.log();
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console.log('Map:');
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console.log(template.map);
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console.log();
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function collectSource(lines, lineName, colName, order) {
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var ret = {},
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ordered = [],
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last;
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function collect(current) {
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if (last) {
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var mapLines = lines.slice(last[lineName] - 1, current && current[lineName]);
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if (mapLines.length) {
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if (current) {
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mapLines[mapLines.length - 1] = mapLines[mapLines.length - 1].slice(0, current[colName]);
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}
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mapLines[0] = mapLines[0].slice(last[colName]);
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}
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ret[last[lineName] + ':' + last[colName]] = mapLines.join('\n');
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ordered.push({
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startLine: last[lineName],
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startCol: last[colName],
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endLine: current && current[lineName]
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});
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}
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last = current;
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}
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consumer.eachMapping(collect, undefined, order);
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collect();
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return ret;
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}
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srcLines = collectSource(srcLines, 'originalLine', 'originalColumn', SourceMapConsumer.ORIGINAL_ORDER);
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lines = collectSource(lines, 'generatedLine', 'generatedColumn');
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consumer.eachMapping(function(mapping) {
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var originalSrc = srcLines[mapping.originalLine + ':' + mapping.originalColumn],
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generatedSrc = lines[mapping.generatedLine + ':' + mapping.generatedColumn];
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if (!mapping.originalLine) {
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console.log('generated', mapping.generatedLine + ':' + mapping.generatedColumn, generatedSrc);
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} else {
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console.log('map',
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mapping.source,
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mapping.originalLine + ':' + mapping.originalColumn,
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originalSrc,
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'->',
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mapping.generatedLine + ':' + mapping.generatedColumn,
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generatedSrc);
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}
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});
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}
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