mirror of https://github.com/webpack/webpack.git
108 lines
2.7 KiB
JavaScript
108 lines
2.7 KiB
JavaScript
"use strict";
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const fs = require("fs");
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const path = require("path");
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const root = process.cwd();
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const node_modulesFolder = path.resolve(root, "node_modules");
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const webpackDependencyFolder = path.resolve(root, "node_modules/webpack");
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function setup() {
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return checkSymlinkExistsAsync()
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.then(hasSymlink => {
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if (!hasSymlink) {
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return ensureYarnInstalledAsync().then(() => {
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return runSetupAsync().then(() => {
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return checkSymlinkExistsAsync();
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});
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});
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}
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})
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.then(() => {
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process.exitCode = 0;
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})
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.catch(e => {
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console.error(e);
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process.exitCode = 1;
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});
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}
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function runSetupAsync() {
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return exec("yarn", ["install"], "Install dependencies")
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.then(() => exec("yarn", ["link"], "Create webpack symlink"))
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.then(() => exec("yarn", ["link", "webpack"], "Link webpack into itself"));
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}
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function checkSymlinkExistsAsync() {
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return new Promise((resolve, reject) => {
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if (
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fs.existsSync(node_modulesFolder) &&
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fs.existsSync(webpackDependencyFolder) &&
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fs.lstatSync(webpackDependencyFolder).isSymbolicLink()
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) {
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resolve(true);
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} else {
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resolve(false);
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}
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});
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}
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function ensureYarnInstalledAsync() {
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const semverPattern = /^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(-(0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(\.(0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*)?(\+[0-9a-zA-Z-]+(\.[0-9a-zA-Z-]+)*)?$/;
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return execGetOutput("yarn", ["-v"], "Check yarn version")
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.then(
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stdout => semverPattern.test(stdout),
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() => false
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)
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.then(hasYarn => hasYarn || installYarnAsync());
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}
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function installYarnAsync() {
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return exec("npm", ["install", "-g", "yarn"], "Install yarn");
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}
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function exec(command, args, description) {
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console.log(`Setup: ${description}`);
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return new Promise((resolve, reject) => {
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let cp = require("child_process").spawn(command, args, {
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cwd: root,
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stdio: "inherit",
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shell: true
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});
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cp.on("error", error => {
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reject(new Error(`${description} failed with ${error}`));
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});
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cp.on("exit", exitCode => {
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if (exitCode) {
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reject(`${description} failed with exit code ${exitCode}`);
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} else {
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resolve();
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}
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});
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});
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}
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function execGetOutput(command, args, description) {
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console.log(`Setup: ${description}`);
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return new Promise((resolve, reject) => {
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let cp = require("child_process").spawn(command, args, {
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cwd: root,
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stdio: [process.stdin, "pipe", process.stderr],
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shell: true
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});
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cp.on("error", error => {
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reject(new Error(`${description} failed with ${error}`));
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});
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cp.on("exit", exitCode => {
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if (exitCode) {
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reject(`${description} failed with exit code ${exitCode}`);
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} else {
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resolve(Buffer.concat(buffers).toString("utf-8").trim());
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}
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});
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const buffers = [];
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cp.stdout.on("data", data => buffers.push(data));
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});
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}
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setup();
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