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extract generic build functions to react-dev-utils (facebook#1726)
* Temp rename * Rename to change the case * extract generic build functions to react-dev-utils * tweak package json files and move removeFileNameHash * revert removeFileNameHash * use paths.appBuild in printFileSizes * use paths.appBuild in removeFileNameHash * change curried functions to regular functions * add fs-extra to react-dev-utils deps * move getDifferenceLabel inside printFileSizes * inline copyPublicFolder * combine printFileSizes and removeFileNameHash to fileSizeReporter * fix typo * Tweak APIs and fix issues * Fix heading * Remove missing file * Newline * Newline * Trailing space * Update FileSizeReporter.js * Update build.js
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/** | ||
* Copyright (c) 2015-present, Facebook, Inc. | ||
* All rights reserved. | ||
* | ||
* This source code is licensed under the BSD-style license found in the | ||
* LICENSE file in the root directory of this source tree. An additional grant | ||
* of patent rights can be found in the PATENTS file in the same directory. | ||
*/ | ||
|
||
'use strict'; | ||
|
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var fs = require('fs'); | ||
var path = require('path'); | ||
var chalk = require('chalk'); | ||
var filesize = require('filesize'); | ||
var recursive = require('recursive-readdir'); | ||
var stripAnsi = require('strip-ansi'); | ||
var gzipSize = require('gzip-size').sync; | ||
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// Prints a detailed summary of build files. | ||
function printFileSizesAfterBuild(webpackStats, previousSizeMap) { | ||
var root = previousSizeMap.root; | ||
var sizes = previousSizeMap.sizes; | ||
var assets = webpackStats | ||
.toJson() | ||
.assets.filter(asset => /\.(js|css)$/.test(asset.name)) | ||
.map(asset => { | ||
var fileContents = fs.readFileSync(path.join(root, asset.name)); | ||
var size = gzipSize(fileContents); | ||
var previousSize = sizes[removeFileNameHash(root, asset.name)]; | ||
var difference = getDifferenceLabel(size, previousSize); | ||
return { | ||
folder: path.join('build', path.dirname(asset.name)), | ||
name: path.basename(asset.name), | ||
size: size, | ||
sizeLabel: filesize(size) + (difference ? ' (' + difference + ')' : '') | ||
}; | ||
}); | ||
assets.sort((a, b) => b.size - a.size); | ||
var longestSizeLabelLength = Math.max.apply( | ||
null, | ||
assets.map(a => stripAnsi(a.sizeLabel).length) | ||
); | ||
assets.forEach(asset => { | ||
var sizeLabel = asset.sizeLabel; | ||
var sizeLength = stripAnsi(sizeLabel).length; | ||
if (sizeLength < longestSizeLabelLength) { | ||
var rightPadding = ' '.repeat(longestSizeLabelLength - sizeLength); | ||
sizeLabel += rightPadding; | ||
} | ||
console.log( | ||
' ' + | ||
sizeLabel + | ||
' ' + | ||
chalk.dim(asset.folder + path.sep) + | ||
chalk.cyan(asset.name) | ||
); | ||
}); | ||
} | ||
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function removeFileNameHash(buildFolder, fileName) { | ||
return fileName | ||
.replace(buildFolder, '') | ||
.replace(/\/?(.*)(\.\w+)(\.js|\.css)/, (match, p1, p2, p3) => p1 + p3); | ||
} | ||
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// Input: 1024, 2048 | ||
// Output: "(+1 KB)" | ||
function getDifferenceLabel(currentSize, previousSize) { | ||
var FIFTY_KILOBYTES = 1024 * 50; | ||
var difference = currentSize - previousSize; | ||
var fileSize = !Number.isNaN(difference) ? filesize(difference) : 0; | ||
if (difference >= FIFTY_KILOBYTES) { | ||
return chalk.red('+' + fileSize); | ||
} else if (difference < FIFTY_KILOBYTES && difference > 0) { | ||
return chalk.yellow('+' + fileSize); | ||
} else if (difference < 0) { | ||
return chalk.green(fileSize); | ||
} else { | ||
return ''; | ||
} | ||
} | ||
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function measureFileSizesBeforeBuild(buildFolder) { | ||
return new Promise(resolve => { | ||
recursive(buildFolder, (err, fileNames) => { | ||
var sizes; | ||
if (!err && fileNames) { | ||
sizes = fileNames | ||
.filter(fileName => /\.(js|css)$/.test(fileName)) | ||
.reduce((memo, fileName) => { | ||
var contents = fs.readFileSync(fileName); | ||
var key = removeFileNameHash(buildFolder, fileName); | ||
memo[key] = gzipSize(contents); | ||
return memo; | ||
}, {}); | ||
} | ||
resolve({ | ||
root: buildFolder, | ||
sizes: sizes || {}, | ||
}); | ||
}); | ||
}); | ||
} | ||
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module.exports = { | ||
measureFileSizesBeforeBuild: measureFileSizesBeforeBuild, | ||
printFileSizesAfterBuild: printFileSizesAfterBuild, | ||
}; |
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