Merge pull request #4111 from MetaMask/build-fix-sourcemaps
Build - fix sourcemapsfeature/default_network_editable
Frankie
7 years ago
committed by
GitHub
commit
9b1c07c750
@ -0,0 +1,49 @@ |
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const fs = require('fs') |
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const { SourceMapConsumer } = require('source-map') |
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//
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// Utility to help check if sourcemaps are working
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//
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// searches `dist/chrome/inpage.js` for "new Error" statements
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// and prints their source lines using the sourcemaps.
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// if not working it may error or print minified garbage
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//
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start() |
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async function start() { |
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const rawBuild = fs.readFileSync(__dirname + '/../dist/chrome/inpage.js', 'utf8') |
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const rawSourceMap = fs.readFileSync(__dirname + '/../dist/sourcemaps/inpage.js.map', 'utf8') |
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const consumer = await new SourceMapConsumer(rawSourceMap) |
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console.log('hasContentsOfAllSources:', consumer.hasContentsOfAllSources(), '\n') |
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console.log('sources:') |
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consumer.sources.map((sourcePath) => console.log(sourcePath)) |
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console.log('\nexamining "new Error" statements:\n') |
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const sourceLines = rawBuild.split('\n') |
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sourceLines.map(line => indicesOf('new Error', line)) |
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.forEach((errorIndices, lineIndex) => { |
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// if (errorIndex === null) return console.log('line does not contain "new Error"')
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errorIndices.forEach((errorIndex) => { |
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const position = { line: lineIndex + 1, column: errorIndex } |
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const result = consumer.originalPositionFor(position) |
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if (!result.source) return console.warn(`!! missing source for position: ${position}`) |
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// filter out deps distributed minified without sourcemaps
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if (result.source === 'node_modules/browserify/node_modules/browser-pack/_prelude.js') return // minified mess
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if (result.source === 'node_modules/web3/dist/web3.min.js') return // minified mess
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const sourceContent = consumer.sourceContentFor(result.source) |
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const sourceLines = sourceContent.split('\n') |
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const line = sourceLines[result.line-1] |
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console.log(`\n========================== ${result.source} ====================================\n`) |
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console.log(line) |
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console.log(`\n==============================================================================\n`) |
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}) |
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}) |
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} |
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function indicesOf(substring, string) { |
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var a=[],i=-1; |
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while((i=string.indexOf(substring,i+1)) >= 0) a.push(i); |
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return a; |
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} |
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