Update eslint from 8 to 9.

Extension/.scripts/clean.ts

@@ -18,25 +18,28 @@ export async function main() {
 }
 
 export async function all() {
-    await rimraf(...(await getModifiedIgnoredFiles()).filter(each => !each.includes('node_modules')));
+    await rimraf(...(await getModifiedIgnoredFiles()).filter((each): each is string => each !== undefined && !each.includes('node_modules')));
 }
 
 export async function reset() {
     verbose(`Resetting all .gitignored files in extension`);
-    await rimraf(...await getModifiedIgnoredFiles());
+    await rimraf(...(await getModifiedIgnoredFiles()).filter((each): each is string => each !== undefined));
 }
 
 async function details(files: string[]) {
-    let all = await Promise.all(files.filter(each => each).map(async (each) => {
-        // eslint-disable-next-line @typescript-eslint/no-unused-vars
-        const [filename, stats ] = await filepath.stats(each);
+    const results = await Promise.all(files.filter(each => each).map(async (each) => {
+        const [, stats] = await filepath.stats(each);
+        if (!stats) {
+            return null;
+        }
         return {
             filename: stats.isDirectory() ? cyan(`${each}${sep}**`) : brightGreen(`${each}`),
             date: stats.mtime.toLocaleDateString().replace(/\b(\d)\//g, '0$1\/'),
             time: stats.mtime.toLocaleTimeString().replace(/^(\d)\:/g, '0$1:'),
             modified: stats.mtime
         };
     }));
+    let all = results.filter((each): each is NonNullable<typeof each> => each !== null);
     all = all.sort((a, b) => a.modified.getTime() - b.modified.getTime());
     // print a formatted table so the date and time are aligned
     const max = all.reduce((max, each) => Math.max(max, each.filename.length), 0);
@@ -56,7 +59,7 @@ export async function show(opt?: string) {
         case 'ignored':
         case 'untracked':
             console.log(cyan('\n\nUntracked+Ignored files:'));
-            return details(await getModifiedIgnoredFiles());
+            return details((await getModifiedIgnoredFiles()).filter((each): each is string => each !== undefined));
 
         default:
             return error(`Unknown option '${opt}'`);

Extension/.scripts/common.ts

@@ -54,11 +54,12 @@ export async function getModifiedIgnoredFiles() {
     }
 
     // return the full path of files that would be removed.
+    // eslint-disable-next-line @typescript-eslint/no-misused-promises
     return Promise.all(stdio.filter("Would remove").map((s) => filepath.exists(s.replace(/^Would remove /, ''), $root)).filter(p => p));
 }
 
 export async function rimraf(...paths: string[]) {
-    const all = [];
+    const all: Promise<void>[] = [];
     for (const each of paths) {
         if (!each) {
             continue;
@@ -82,6 +83,9 @@ export async function mkdir(filePath: string) {
         }
         throw new Error(`Cannot create directory '${filePath}' because there is a file there.`);
     }
+    if (!fullPath) {
+        throw new Error(`Cannot create directory '${filePath}' because the path is invalid.`);
+    }
 
     await md(fullPath, { recursive: true });
     return fullPath;
@@ -258,7 +262,7 @@ export function position(text: string) {
     return gray(`${text}`);
 }
 
-export async function assertAnyFolder(oneOrMoreFolders: string | string[], errorMessage?: string): Promise<string> {
+export async function assertAnyFolder(oneOrMoreFolders: string | string[], errorMessage?: string): Promise<string | undefined> {
     oneOrMoreFolders = is.array(oneOrMoreFolders) ? oneOrMoreFolders : [oneOrMoreFolders];
     for (const each of oneOrMoreFolders) {
         const result = await filepath.isFolder(each, $root);
@@ -275,7 +279,7 @@ export async function assertAnyFolder(oneOrMoreFolders: string | string[], error
     }
 }
 
-export async function assertAnyFile(oneOrMoreFiles: string | string[], errorMessage?: string): Promise<string> {
+export async function assertAnyFile(oneOrMoreFiles: string | string[], errorMessage?: string): Promise<string | undefined> {
     oneOrMoreFiles = is.array(oneOrMoreFiles) ? oneOrMoreFiles : [oneOrMoreFiles];
     for (const each of oneOrMoreFiles) {
         const result = await filepath.isFile(each, $root);
@@ -325,7 +329,6 @@ export async function checkDTS() {
     let failing = false;
     failing = !await assertAnyFile('vscode.d.ts') && (quiet || warn(`The VSCode import file '${$root}/dist/src/vscode.d.ts is missing.`)) || failing;
     failing = !await assertAnyFile('vscode.proposed.terminalDataWriteEvent.d.ts') && (quiet || warn(`The VSCode import file '${$root}/dist/src/vscode.proposed.terminalDataWriteEvent.d.ts is missing.`)) || failing;
-    failing = !await assertAnyFile('vscode.proposed.lmTools.d.ts') && (quiet || warn(`The VSCode import file '${$root}/dist/src/vscode.proposed.lmTools.d.ts is missing.`)) || failing;
 
     if (!failing) {
         verbose('VSCode d.ts files appear to be in place.');

Extension/.scripts/copyWalkthruMedia.ts

@@ -19,7 +19,7 @@ export async function watch() {
         verbose(`Watching ${source} folder for changes.`);
         console.log('Press Ctrl+C to exit.');
         // eslint-disable-next-line @typescript-eslint/no-unused-vars
-        for await (const event of watchFiles(source, {recursive: true })) {
+        for await (const event of watchFiles(source, { recursive: true })) {
             await main();
         }
     }

Extension/.scripts/generateOptionsSchema.ts

@@ -3,8 +3,6 @@
  * See 'LICENSE' in the project root for license information.
  * ------------------------------------------------------------------------------------------ */
 
-/* eslint-disable no-prototype-builtins */
-
 import { resolve } from 'path';
 import { $root, read, write } from './common';
 

Extension/.scripts/test.ts

@@ -75,7 +75,7 @@ filterStdio();
 async function unitTests() {
     await assertAnyFolder('dist/test/unit', `The folder '${$root}/dist/test/unit is missing. You should run ${brightGreen("yarn compile")}\n\n`);
     const mocha = await assertAnyFile(["node_modules/.bin/mocha.cmd", "node_modules/.bin/mocha"], `Can't find the mocha testrunner. You might need to run ${brightGreen("yarn install")}\n\n`);
-    const result = spawnSync(mocha, [`${$root}/dist/test/unit/**/*.test.js`, '--timeout', '30000'], { stdio:'inherit', shell: true });
+    const result = spawnSync(mocha, [`${$root}/dist/test/unit/**/*.test.js`, '--timeout', '30000'], { stdio: 'inherit', shell: true });
     verbose(`\n${green("NOTE:")} If you want to run a scenario test (end-to-end) use ${cmdSwitch('scenario=<NAME>')} \n\n`);
     return result.status;
 }
@@ -161,23 +161,24 @@ interface Input {
     id: string;
     type: string;
     description: string;
-    options: CommentArray<{label: string; value: string}>;
+    options: CommentArray<{ label: string; value: string }>;
 }
 
 export async function getScenarioNames() {
     return (await readdir(`${$root}/test/scenarios`).catch(returns.none)).filter(each => each !== 'Debugger');
 }
 
-export async function getScenarioFolder(scenarioName: string) {
+export async function getScenarioFolder(scenarioName: string | undefined) {
     return scenarioName ? resolve(`${$root}/test/scenarios/${(await getScenarioNames()).find(each => each.toLowerCase() === scenarioName.toLowerCase())}`) : undefined;
 }
 
 export async function list() {
     console.log(`\n${cyan("Scenarios: ")}\n`);
     const names = await getScenarioNames();
-    const max = names.reduce((max, each) => Math.max(max, each), 0);
+    const max = names.reduce((max, each) => Math.max(max, each.length), 0);
     for (const each of names) {
-        console.log(`  ${green(each.padEnd(max))}: ${gray(await getScenarioFolder(each))}`);
+        const folder = await getScenarioFolder(each);
+        console.log(`  ${green(each.padEnd(max))}: ${gray(folder || '')}`);
     }
 }
 

Extension/.scripts/tsconfig.json

@@ -7,6 +7,7 @@
         "experimentalDecorators": true,
         "allowSyntheticDefaultImports": true,
         "sourceMap": true,
-        "esModuleInterop": true
+        "esModuleInterop": true,
+        "strictNullChecks": true
     }
 }

Extension/.vscodeignore

@@ -29,8 +29,7 @@ jobs/**
 cgmanifest.json
 
 # ignore development files
-.eslintignore
-.eslintrc.js
+eslint.config.js
 .gitattributes
 .gitignore
 gulpfile.js