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Merge pull request #272 from babel/plugin-contrib-0
Add plugin contribution
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#!/usr/bin/env node | ||
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const fs = require("fs"); | ||
const path = require("path"); | ||
const {transform} = require("babel-core"); | ||
const Table = require("cli-table"); | ||
const zlib = require("zlib"); | ||
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run(process.argv[2]); | ||
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function run(inputFile) { | ||
const input = fs.readFileSync(inputFile).toString(); | ||
const table = new Table(Object.assign({ | ||
head: [ | ||
"name", | ||
"output(bytes)", | ||
"output gzip(bytes)", | ||
"raw compression (%)", | ||
"gzip win (%)", | ||
"gzip % (%)" | ||
], | ||
}, tableStyle())); | ||
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const baseOutput = transform(input, { | ||
minified: true, | ||
compact: true, | ||
comments: false, | ||
}).code; | ||
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const baseGzip = zlib.gzipSync(baseOutput); | ||
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getPlugins().forEach(({name, plugin}) => { | ||
const output = transform(baseOutput, { | ||
plugins: [plugin], | ||
minified: true, | ||
compact: true, | ||
comments: false, | ||
}).code; | ||
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const gzippedOutput = zlib.gzipSync(output); | ||
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const percentage = (1 - len(output) / len(baseOutput)) * 100; | ||
const gzipWin = (1 - len(gzippedOutput) / len(baseGzip)) * 100; | ||
const gzipPercentage = (1 - len(gzippedOutput) / len(output)) * 100; | ||
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table.push([ | ||
name.split("babel-plugin-")[1], | ||
len(output), | ||
len(gzippedOutput), | ||
percentage.toFixed(3), | ||
gzipWin.toFixed(3), | ||
gzipPercentage.toFixed(3), | ||
]); | ||
}); | ||
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const wcWin = (1 - len(baseOutput) / len(input)) * 100; | ||
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console.log(` | ||
input: input file with white space and comments removed | ||
input size (bytes) : ${len(baseOutput)} | ||
input gzip size (bytes) : ${len(baseGzip)} | ||
raw compression : % decrease from input -> output | ||
gzip win : % decrease from gzipInput -> gzipOutput | ||
gzip % : % decrease from output -> gzipOutput | ||
Whitespaces and comments win (raw compression): ${wcWin} | ||
`); | ||
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console.log(table.toString()); | ||
} | ||
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function getPlugins() { | ||
return fs.readdirSync(path.join(__dirname, "../packages")) | ||
.filter((dir) => { | ||
if (!isDir(path.join(__dirname, "../packages", dir))) return false; | ||
if (dir.indexOf("babel-plugin-") !== 0) return false; | ||
try { | ||
require(`../packages/${dir}`); | ||
return true; | ||
} catch (e) { | ||
return false; | ||
} | ||
}) | ||
.map((pluginName) => ({ | ||
name: pluginName, | ||
plugin: require(`../packages/${pluginName}`) | ||
})); | ||
} | ||
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function isDir(p) { | ||
try { | ||
return fs.statSync(p).isDirectory(); | ||
} catch (e) { | ||
return false; | ||
} | ||
} | ||
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function len(str) { | ||
return Buffer.byteLength(str, "utf-8"); | ||
} | ||
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// just to keep it at the bottom | ||
function tableStyle() { | ||
return { | ||
chars: { | ||
top: "", | ||
"top-mid": "" , | ||
"top-left": "" , | ||
"top-right": "", | ||
bottom: "" , | ||
"bottom-mid": "" , | ||
"bottom-left": "" , | ||
"bottom-right": "", | ||
left: "", | ||
"left-mid": "", | ||
mid: "", | ||
"mid-mid": "", | ||
right: "" , | ||
"right-mid": "", | ||
middle: " ", | ||
}, | ||
style: { | ||
"padding-left": 0, | ||
"padding-right": 0, | ||
head: ["bold"], | ||
} | ||
}; | ||
} |