Remove some unused deps and dead code (#50367)

Gulpfile.js

@@ -8,7 +8,6 @@ const del = require("del");
 const rename = require("gulp-rename");
 const concat = require("gulp-concat");
 const merge2 = require("merge2");
-const mkdirp = require("mkdirp");
 const { src, dest, task, parallel, series, watch } = require("gulp");
 const { append, transform } = require("gulp-insert");
 const { prependFile } = require("./scripts/build/prepend");
@@ -27,9 +26,10 @@ task("scripts").description = "Builds files in the 'scripts' folder.";
 const cleanScripts = () => cleanProject("scripts");
 cleanTasks.push(cleanScripts);
 
+/** @type {{ libs: string[]; paths: Record<string, string | undefined>; }} */
 const libraries = readJson("./src/lib/libs.json");
 const libs = libraries.libs.map(lib => {
-    const relativeSources = ["header.d.ts"].concat(libraries.sources && libraries.sources[lib] || [lib + ".d.ts"]);
+    const relativeSources = ["header.d.ts", lib + ".d.ts"];
     const relativeTarget = libraries.paths && libraries.paths[lib] || ("lib." + lib + ".d.ts");
     const sources = relativeSources.map(s => path.posix.join("src/lib", s));
     const target = `built/local/${relativeTarget}`;

package.json

@@ -32,7 +32,6 @@
         "@octokit/rest": "latest",
         "@types/async": "latest",
         "@types/chai": "latest",
-        "@types/convert-source-map": "latest",
         "@types/fs-extra": "^9.0.13",
         "@types/glob": "latest",
         "@types/gulp": "^4.0.9",
@@ -42,14 +41,12 @@
         "@types/gulp-sourcemaps": "latest",
         "@types/merge2": "latest",
         "@types/microsoft__typescript-etw": "latest",
-        "@types/minimatch": "latest",
         "@types/minimist": "latest",
         "@types/mkdirp": "latest",
         "@types/mocha": "latest",
         "@types/ms": "latest",
         "@types/node": "latest",
         "@types/node-fetch": "^2.6.2",
-        "@types/q": "latest",
         "@types/source-map-support": "latest",
         "@types/xml2js": "^0.4.11",
         "@typescript-eslint/eslint-plugin": "^5.28.0",
@@ -59,7 +56,6 @@
         "azure-devops-node-api": "^11.1.1",
         "chai": "latest",
         "chalk": "^4.1.2",
-        "convert-source-map": "latest",
         "del": "6.1.1",
         "diff": "^5.1.0",
         "eslint": "8.17.0",
@@ -84,11 +80,9 @@
         "ms": "^2.1.3",
         "node-fetch": "^2.6.7",
         "prex": "^0.4.7",
-        "q": "latest",
         "source-map-support": "latest",
         "typescript": "^4.5.5",
         "vinyl": "latest",
-        "vinyl-sourcemaps-apply": "latest",
         "which": "^2.0.2",
         "xml2js": "^0.4.23"
     },

scripts/build/tests.js

@@ -1,5 +1,4 @@
 // @ts-check
-const gulp = require("gulp");
 const del = require("del");
 const fs = require("fs");
 const os = require("os");