Move a couple scripts to eng/scripts/ and update Rush commands

eng/scripts/for-each.js

@@ -0,0 +1,73 @@
+const { spawn } = require('child_process');
+const { readFileSync } = require('fs');
+const { resolve } = require('path');
+
+function read(filename) {
+  const txt = readFileSync(filename, "utf8")
+    .replace(/\r/gm, "")
+    .replace(/\n/gm, "«")
+    .replace(/\/\*.*?\*\//gm, "")
+    .replace(/«/gm, "\n")
+    .replace(/\s+\/\/.*/g, "");
+  return JSON.parse(txt);
+}
+
+const repo = `${__dirname}/../..`;
+
+const rush = read(`${repo}/rush.json`);
+const pjs = {};
+
+
+
+function forEachProject(onEach) {
+  // load all the projects
+  for (const each of rush.projects) {
+    const packageName = each.packageName;
+    const projectFolder = resolve(`${repo}/${each.projectFolder}`);
+    const project = JSON.parse(readFileSync(`${projectFolder}/package.json`));
+    onEach(packageName, projectFolder, project);
+  }
+}
+
+function npmForEach(cmd) {
+  let count = 0;
+  let exitCode = 0;
+  const result = {};
+  const procs = [];
+  const t1 = process.uptime() * 100;
+  forEachProject((name, location, project) => {
+    // checks for the script first
+    if (project.scripts[cmd]) {
+      count++;
+      const proc = spawn("npm", ["--silent", "run", cmd], { cwd: location, shell: true, stdio: "inherit" });
+      procs.push(proc);
+      result[name] = {
+        name, location, project, proc,
+      };
+    }
+  });
+
+  procs.forEach(proc => proc.on("close", (code, signal) => {
+    count--;
+    exitCode += code;
+
+    if (count === 0) {
+      const t2 = process.uptime() * 100;
+
+      console.log('---------------------------------------------------------');
+      if (exitCode !== 0) {
+        console.log(`  Done : command '${cmd}' - ${Math.floor(t2 - t1) / 100} s -- Errors ${exitCode} `)
+      } else {
+        console.log(`  Done : command '${cmd}' - ${Math.floor(t2 - t1) / 100} s -- No Errors `)
+      }
+      console.log('---------------------------------------------------------');
+      process.exit(exitCode);
+    }
+  }));
+
+  return result;
+}
+
+module.exports.forEachProject = forEachProject;
+module.exports.npm = npmForEach;
+module.exports.projectCount = rush.projects.length;

eng/scripts/npm-run.js

@@ -0,0 +1,2 @@
+// Runs the npm run command on each project that has it.
+require('./for-each').npm(process.argv[2]);

eng/scripts/watch.js

@@ -0,0 +1,33 @@
+var cp = require('child_process');
+
+require('./for-each').forEachProject((packageName, projectFolder, project) => {
+  if (project.scripts && project.scripts.watch) {
+    // NOTE: We deliberately use `tsc --watch --project ${projectFolder}` here
+    // with cwd at the repo root instead of `npm run watch` with cwd at project
+    // folder. This ensures that error messages put source file paths relative
+    // to the repo root, which then allows VS Code to navigate to error
+    // locations correctly.
+    const tsc = `${projectFolder}/node_modules/.bin/tsc`;
+    const args = ['--watch', '--project', projectFolder];
+    console.log(`${tsc} ${args.join(' ')}`);
+
+    const proc = cp.spawn(tsc, args, { cwd: `${__dirname}/../`, shell: true, stdio: "inherit" });
+    proc.on("error", (c, s) => {
+      console.log(packageName);
+      console.error(c);
+      console.error(s);
+    });
+    proc.on('exit', (c, s) => {
+      console.log(packageName);
+      console.error(c);
+      console.error(s);
+    });
+    proc.on('message', (c, s) => {
+      console.log(packageName);
+      console.error(c);
+      console.error(s);
+    })
+  }
+});
+
+