diff options
| -rw-r--r-- | development/sourcemap-validator.js | 49 | ||||
| -rw-r--r-- | package.json | 1 |
2 files changed, 50 insertions, 0 deletions
diff --git a/development/sourcemap-validator.js b/development/sourcemap-validator.js new file mode 100644 index 000000000..edc97667a --- /dev/null +++ b/development/sourcemap-validator.js @@ -0,0 +1,49 @@ +const fs = require('fs') +const { SourceMapConsumer } = require('source-map') + +// +// Utility to help check if sourcemaps are working +// +// searches `dist/chrome/inpage.js` for "new Error" statements +// and prints their source lines using the sourcemaps. +// if not working it may error or print minified garbage +// + +start() + +async function start() { + const rawBuild = fs.readFileSync(__dirname + '/../dist/chrome/inpage.js', 'utf8') + const rawSourceMap = fs.readFileSync(__dirname + '/../dist/sourcemaps/inpage.js.map', 'utf8') + const consumer = await new SourceMapConsumer(rawSourceMap) + + console.log('hasContentsOfAllSources:', consumer.hasContentsOfAllSources(), '\n') + console.log('sources:') + consumer.sources.map((sourcePath) => console.log(sourcePath)) + + console.log('\nexamining "new Error" statements:\n') + const sourceLines = rawBuild.split('\n') + sourceLines.map(line => indicesOf('new Error', line)) + .forEach((errorIndices, lineIndex) => { + // if (errorIndex === null) return console.log('line does not contain "new Error"') + errorIndices.forEach((errorIndex) => { + const position = { line: lineIndex + 1, column: errorIndex } + const result = consumer.originalPositionFor(position) + if (!result.source) return console.warn(`!! missing source for position: ${position}`) + // filter out deps distributed minified without sourcemaps + if (result.source === 'node_modules/browserify/node_modules/browser-pack/_prelude.js') return // minified mess + if (result.source === 'node_modules/web3/dist/web3.min.js') return // minified mess + const sourceContent = consumer.sourceContentFor(result.source) + const sourceLines = sourceContent.split('\n') + const line = sourceLines[result.line-1] + console.log(`\n========================== ${result.source} ====================================\n`) + console.log(line) + console.log(`\n==============================================================================\n`) + }) + }) +} + +function indicesOf(substring, string) { + var a=[],i=-1; + while((i=string.indexOf(substring,i+1)) >= 0) a.push(i); + return a; +} diff --git a/package.json b/package.json index 953d8d7ac..39182fba0 100644 --- a/package.json +++ b/package.json @@ -269,6 +269,7 @@ "selenium-webdriver": "^3.5.0", "shell-parallel": "^1.0.3", "sinon": "^5.0.0", + "source-map": "^0.7.2", "stylelint-config-standard": "^18.2.0", "tape": "^4.5.1", "testem": "^2.0.0", |