Adds an E2E test for TypeScript ESLint (#669)

* Adds an E2E test for TypeScript ESLint

**What's the problem this PR addresses?**

#368 - Adding one basic test for ESLint with `typescript-eslint`

* Moves the ESLint-TS workflow in the ESLint workflow

* Updates the workflows

* Resetup E2E for typescript-eslint integration test

Co-authored-by: Maël Nison <nison.mael@gmail.com>

.github/workflows/e2e-eslint-workflow.yml

@@ -41,3 +41,18 @@ jobs:
 
         echo '42' | tee ko.js
         ! yarn eslint ko.js
+
+    - name: 'Running the TypeScript integration test'
+      run: |
+        source scripts/e2e-setup-ci.sh
+
+        yarn init -p
+        yarn add eslint typescript @typescript-eslint/parser @typescript-eslint/eslint-plugin
+
+        echo '{"parser": "@typescript-eslint/parser", "plugins": ["@typescript-eslint"], "rules": {"@typescript-eslint/explicit-function-return-type": "error"}}' > .eslintrc
+
+        echo 'const f = (): number => 42;' | tee ok.ts
+        yarn eslint ok.ts
+
+        echo 'const f = () => 42;' | tee ko.ts
+        ! yarn eslint ko.ts

.github/workflows/e2e-typescript-workflow.yml

@@ -26,23 +26,14 @@ jobs:
     - name: 'Build the standard bundle'
       run: |
         node ./scripts/run-yarn.js build:cli
-        node ./scripts/run-yarn workspace @yarnpkg/fslib pack
-        node ./scripts/run-yarn workspace @yarnpkg/libzip pack
-        node ./scripts/run-yarn workspace @yarnpkg/pnpify pack
 
     - name: 'Running the integration test'
       run: |
         source scripts/e2e-setup-ci.sh
 
         yarn init -p
+        yarn add typescript
 
-        jq '.resolutions["@yarnpkg/fslib"] = "file:'"$GITHUB_WORKSPACE"'/packages/yarnpkg-fslib/package.tgz"' <<< "$(cat package.json)" > package.json
-        jq '.resolutions["@yarnpkg/libzip"] = "file:'"$GITHUB_WORKSPACE"'/packages/yarnpkg-libzip/package.tgz"' <<< "$(cat package.json)" > package.json
-        jq '.resolutions["@yarnpkg/pnpify"] = "file:'"$GITHUB_WORKSPACE"'/packages/yarnpkg-pnpify/package.tgz"' <<< "$(cat package.json)" > package.json
-
-        jq '.scripts.tsc = "pnpify tsc"' <<< "$(cat package.json)" > package.json
-
-        yarn add typescript @yarnpkg/pnpify@*
         yarn add ts-pnp left-pad @types/left-pad
 
         echo '{"compilerOptions": {"baseUrl": ".", "strict": true, "esModuleInterop": true}}' > tsconfig.json