webpack/examples/build-common.js

101 lines
3.0 KiB
JavaScript

/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const cp = require("child_process");
const path = require("path");
const tc = require("./template-common");
const fs = require("fs");
const async = require("neo-async");
const extraArgs = "";
const targetArgs = global.NO_TARGET_ARGS ? "" : "--entry ./example.js --output-filename output.js";
const displayReasons = global.NO_REASONS ? "" : "--stats-reasons --stats-used-exports --stats-provided-exports";
const statsArgs = global.NO_STATS_OPTIONS ? "" : "--stats-chunks --stats-modules-space 99999 --stats-chunk-origins";
const publicPathArgs = global.NO_PUBLIC_PATH ? "" : '--output-public-path "dist/"';
const statsColorsArg = global.STATS_COLORS ? "" : "--no-stats-colors";
const commonArgs = `${statsColorsArg} ${statsArgs} ${publicPathArgs} ${extraArgs} ${targetArgs}`;
let readme = fs.readFileSync(require("path").join(process.cwd(), "template.md"), "utf-8");
const doCompileAndReplace = (args, prefix, callback) => {
if (!tc.needResults(readme, prefix)) {
callback();
return;
}
const deleteFiles = (dir) => {
const targetDir = path.resolve("dist", dir);
if (path.extname(targetDir) === "") {
fs.readdirSync(targetDir).forEach((file) => {
deleteFiles(path.join(targetDir, file));
});
} else {
fs.unlinkSync(targetDir);
}
};
if (fs.existsSync("dist")) {
for (const dir of fs.readdirSync("dist")) {
deleteFiles(dir);
}
}
try {
require.resolve("webpack-cli");
} catch (e) {
throw new Error("Please install webpack-cli at root.");
}
const connectIO = (subprocess) => {
const { stdin, stdout, stderr } = process;
const { stdin: _stdin, stdout: _stdout, stderr: _stderr } = subprocess;
const inputPair = [[stdin, _stdin]];
const outputPair = [[stdout, _stdout], [stderr, _stderr]];
inputPair.forEach(pair => {
pair[0].pipe(pair[1])
})
outputPair.forEach(pair => {
pair[1].pipe(pair[0])
})
disconnectIO = () => {
inputPair.forEach(pair => {
pair[0].unpipe(pair[1])
})
outputPair.forEach(pair => {
pair[1].unpipe(pair[0])
})
}
}
let disconnectIO = null;
const subprocess = cp.exec(`node ${path.resolve(__dirname, "../bin/webpack.js")} ${args} ${displayReasons} ${commonArgs}`, (error, stdout, stderr) => {
disconnectIO && disconnectIO();
if (stderr)
console.log(stderr);
if (error !== null)
console.log(error);
try {
readme = tc.replaceResults(readme, process.cwd(), stdout.replace(/[\r?\n]*$/, ""), prefix);
} catch (e) {
console.log(stderr);
throw e;
}
callback();
});
connectIO(subprocess);
};
async.series([
callback => doCompileAndReplace("--mode production --env production", "production", callback),
callback => doCompileAndReplace("--mode development --env development --devtool none", "development", callback),
callback => doCompileAndReplace("--mode none --env none --output-pathinfo verbose", "", callback)
], () => {
readme = tc.replaceBase(readme);
fs.writeFile("README.md", readme, "utf-8", function () { });
});