chore(engineering): strict typescript rules

Author: joaomoreno

Diff for: package-lock.json

@@ -46,13 +46,12 @@
 		"markdown-it": "^10.0.0",
 		"mime": "^1.3.4",
 		"minimatch": "^3.0.3",
-		"osenv": "^0.1.3",
 		"parse-semver": "^1.1.1",
 		"read": "^1.0.7",
 		"semver": "^5.1.0",
 		"tmp": "^0.2.1",
 		"typed-rest-client": "^1.8.4",
-		"url-join": "^1.1.0",
+		"url-join": "^4.0.1",
 		"xml2js": "^0.4.23",
 		"yauzl": "^2.3.1",
 		"yazl": "^2.2.2"
@@ -71,8 +70,10 @@
 		"@types/read": "^0.0.28",
 		"@types/semver": "^6.0.0",
 		"@types/tmp": "^0.2.2",
+		"@types/url-join": "^4.0.1",
 		"@types/xml2js": "^0.4.4",
 		"@types/yauzl": "^2.9.2",
+		"@types/yazl": "^2.4.2",
 		"husky": "^7.0.4",
 		"mocha": "^7.1.1",
 		"npm-run-all": "^4.1.5",
@@ -87,7 +88,7 @@
 		"require": [
 			"ts-node/register"
 		],
-		"watch-files": "src/**,resources/**",
+		"watch-files": "src/**",
 		"spec": "src/test/**/*.ts"
 	},
 	"prettier": {

Diff for: package.json

@@ -1,6 +1,5 @@
-import * as program from 'commander';
-import * as leven from 'leven';
-
+import program from 'commander';
+import leven from 'leven';
 import { packageCommand, ls } from './package';
 import { publish, unpublish } from './publish';
 import { show } from './show';
@@ -32,7 +31,7 @@ See https://code.visualstudio.com/api/working-with-extensions/publishing-extensi
 }
 
 function main(task: Promise<any>): void {
-	let latestVersion: string = null;
+	let latestVersion: string | null = null;
 
 	const token = new CancellationToken();
 
@@ -63,7 +62,7 @@ module.exports = function (argv: string[]): void {
 		.description('Lists all the files that will be published')
 		.option('--yarn', 'Use yarn instead of npm (default inferred from presence of yarn.lock or .yarnrc)')
 		.option('--no-yarn', 'Use npm instead of yarn (default inferred from lack of yarn.lock or .yarnrc)')
-		.option(
+		.option<string[]>(
 			'--packagedDependencies <path>',
 			'Select packages that should be published only (includes dependencies)',
 			(val, all) => (all ? all.concat(val) : [val]),

Diff for: src/main.ts

@@ -1,8 +1,8 @@
 import * as path from 'path';
 import * as fs from 'fs';
 import * as cp from 'child_process';
-import * as parseSemver from 'parse-semver';
-import { CancellationToken, log } from './util';
+import parseSemver from 'parse-semver';
+import { CancellationToken, log, nonnull } from './util';
 
 const exists = (file: string) =>
 	fs.promises.stat(file).then(
@@ -30,7 +30,7 @@ function exec(
 	cancellationToken?: CancellationToken
 ): Promise<{ stdout: string; stderr: string }> {
 	return new Promise((c, e) => {
-		let disposeCancellationListener: Function = null;
+		let disposeCancellationListener: Function | null = null;
 
 		const child = cp.exec(command, { ...options, encoding: 'utf8' } as any, (err, stdout: string, stderr: string) => {
 			if (disposeCancellationListener) {
@@ -45,22 +45,21 @@ function exec(
 		});
 
 		if (cancellationToken) {
-			disposeCancellationListener = cancellationToken.subscribe(err => {
+			disposeCancellationListener = cancellationToken.subscribe((err: any) => {
 				child.kill();
 				e(err);
 			});
 		}
 	});
 }
 
-function checkNPM(cancellationToken?: CancellationToken): Promise<void> {
-	return exec('npm -v', {}, cancellationToken).then(({ stdout }) => {
-		const version = stdout.trim();
+async function checkNPM(cancellationToken?: CancellationToken): Promise<void> {
+	const { stdout } = await exec('npm -v', {}, cancellationToken);
+	const version = stdout.trim();
 
-		if (/^3\.7\.[0123]$/.test(version)) {
-			return Promise.reject(`npm@${version} doesn't work with vsce. Please update npm: npm install -g npm`);
-		}
-	});
+	if (/^3\.7\.[0123]$/.test(version)) {
+		throw new Error(`npm@${version} doesn't work with vsce. Please update npm: npm install -g npm`);
+	}
 }
 
 function getNpmDependencies(cwd: string): Promise<string[]> {
@@ -174,10 +173,10 @@ async function getYarnProductionDependencies(cwd: string, packagedDependencies?:
 
 	let result = trees
 		.map(tree => asYarnDependency(path.join(cwd, 'node_modules'), tree, !usingPackagedDependencies))
-		.filter(dep => !!dep);
+		.filter(nonnull);
 
 	if (usingPackagedDependencies) {
-		result = selectYarnDependencies(result, packagedDependencies);
+		result = selectYarnDependencies(result, packagedDependencies!);
 	}
 
 	return result;