build: tighten tsconfig (to include build cache, exclude watch folders) (#6375)

* build: extend cypress tsconfig from build tsconfig

* build: exclude node_modules from watch to improve typechecking perf

* fix: even tighter tsconfigs

* fix: even tighter

* fix: tailor cypress tsconfig to testing

* fix: split them up again

* fix: pr comments

cypress.release.config.ts

-import { defineConfig } from 'cypress'
-
-export default defineConfig({
-  projectId: 'yp82ef',
-  e2e: {
-    specPattern: 'cypress/release.ts',
-  },
-})

cypress/e2e/service-worker.test.ts

-import assert = require('assert')
+import assert from 'assert'
 
 describe('Service Worker', () => {
   before(() => {

cypress/release.ts

-const ONE_MINUTE = 60_000
-
-describe(
-  'Release',
-  {
-    pageLoadTimeout: ONE_MINUTE,
-    retries: 30,
-  },
-  () => {
-    it('loads swap page', () => {
-      // TODO: We *must* wait in order to space out the retry attempts. Find a better way to do this.
-      // eslint-disable-next-line cypress/no-unnecessary-waiting
-      cy.wait(ONE_MINUTE)
-        .visit('/', {
-          retryOnStatusCodeFailure: true,
-          retryOnNetworkFailure: true,
-        })
-        .get('#swap-page')
-    })
-  }
-)

cypress/support/e2e.ts

@@ -6,11 +6,12 @@
 // ***********************************************************
 
 // Import commands.ts using ES2015 syntax:
-import { injected } from './ethereum'
-import assert = require('assert')
 import '@cypress/code-coverage/support'
 
+import assert from 'assert'
+
 import { FeatureFlag } from '../../src/featureFlags/flags/featureFlags'
+import { injected } from './ethereum'
 
 declare global {
   // eslint-disable-next-line @typescript-eslint/no-namespace

cypress/tsconfig.json

 {
   "compilerOptions": {
+    "esModuleInterop": true,
+    "incremental": true,
+    "lib": ["DOM", "DOM.Iterable", "ESNext"],
+    "noEmit": true,
     "strict": true,
-    "target": "es5",
-    "lib": ["es5", "dom"],
-    "types": ["cypress"]
+    "target": "ES5",
+    "tsBuildInfoFile": "../node_modules/.cache/tsbuildinfo/cypress", // avoid clobbering the build tsbuildinfo
+    "types": ["cypress", "node"]
   },
-  "include": ["**/*.ts"]
+  "exclude": ["node_modules"],
+  "include": ["**/*.ts"],
+  "watchOptions": {
+    "excludeDirectories": ["node_modules"]
+  }
 }

package.json

@@ -24,7 +24,7 @@
     "analyze": "source-map-explorer 'build/static/js/*.js'",
     "serve": "serve build -l 3000",
     "lint": "yarn eslint --ignore-path .gitignore --cache --cache-location node_modules/.cache/eslint/ .",
-    "typecheck": "tsc --noEmit",
+    "typecheck": "tsc",
     "test": "craco test --coverage",
     "test:size": "node scripts/test-size.js",
     "cypress:open": "cypress open --browser chrome --e2e",

tsconfig.json

@@ -8,7 +8,6 @@
     "downlevelIteration": true,
     "esModuleInterop": true,
     "forceConsistentCasingInFileNames": true,
-    "incremental": true,
     "isolatedModules": true,
     "jsx": "react-jsx",
     "lib": ["DOM", "DOM.Iterable", "ESNext"],
@@ -25,10 +24,13 @@
     "strict": true,
     "strictNullChecks": true,
     "target": "ESNext",
-    "tsBuildInfoFile": "node_modules/.cache/.tsbuildinfo",
+    "tsBuildInfoFile": "node_modules/.cache/tsbuildinfo/build", // avoid clobbering the cypress tsbuildinfo
     "types": ["jest"],
     "useUnknownInCatchVariables": false
   },
-  "exclude": ["node_modules", "cypress"],
-  "include": ["src/**/*", "src/**/*.json"]
+  "exclude": ["node_modules"],
+  "include": ["src/**/*", "src/**/*.json"],
+  "watchOptions": {
+    "excludeDirectories": ["node_modules"]
+  }
 }