make TS check strictest (#421)

playwright.config.ts

@@ -1,6 +1,7 @@
 import type { PlaywrightTestConfig } from '@playwright/test';
 import { devices } from '@playwright/test';
 
+const isCI = !!process.env['CI'];
 /**
  * See https://playwright.dev/docs/test-configuration.
  */
@@ -18,11 +19,11 @@ const config: PlaywrightTestConfig = {
   /* Run tests in files in parallel */
   fullyParallel: true,
   /* Fail the build on CI if you accidentally left test.only in the source code. */
-  forbidOnly: !!process.env.CI,
+  forbidOnly: isCI,
   /* Retry on CI only */
-  retries: process.env.CI ? 2 : 0,
+  retries: isCI ? 2 : 0,
   /* Opt out of parallel tests on CI. */
-  workers: process.env.CI ? 1 : undefined,
+  workers: isCI ? 1 : undefined,
   /* Reporter to use. See https://playwright.dev/docs/test-reporters */
   reporter: [['html', { open: 'never' }]],
   /* Shared settings for all the projects below. See https://playwright.dev/docs/api/class-testoptions. */

scripts/gen-changelog.ts

@@ -83,7 +83,8 @@ async function genChangeLog(): Promise<string> {
       .map((label) => label.name)
       .filter((label) => label.startsWith('PR: '));
 
-    if (labels.length === 0) {
+    const label = labels[0];
+    if (label == null) {
       throw new Error(`PR is missing label. See ${pr.url}`);
     }
     if (labels.length > 1) {
@@ -92,7 +93,6 @@ async function genChangeLog(): Promise<string> {
       );
     }
 
-    const label = labels[0];
     if (labelsConfig[label] == null) {
       throw new Error(`Unknown label: ${label}. See ${pr.url}`);
     }
@@ -275,22 +275,27 @@ function commitInfoToPR(commit: CommitInfo): number {
   const associatedPRs = commit.associatedPullRequests.nodes.filter(
     (pr) => pr.repository.nameWithOwner === `${githubOrg}/${githubRepo}`,
   );
-  if (associatedPRs.length === 0) {
-    const match = / \(#(?<prNumber>[0-9]+)\)$/m.exec(commit.message);
-    if (match?.groups?.prNumber != null) {
-      return parseInt(match.groups.prNumber, 10);
-    }
+
+  if (associatedPRs.length > 1) {
     throw new Error(
-      `Commit ${commit.oid} has no associated PR: ${commit.message}`,
+      `Commit ${commit.oid} is associated with multiple PRs: ${commit.message}`,
     );
   }
-  if (associatedPRs.length > 1) {
+
+  const associatedPR = associatedPRs[0];
+  if (associatedPR == null) {
+    const match = / \(#(?<prNumber>[0-9]+)\)$/m.exec(commit.message);
+    const { prNumber } = match?.groups ?? {};
+
+    if (prNumber != null) {
+      return parseInt(prNumber, 10);
+    }
     throw new Error(
-      `Commit ${commit.oid} is associated with multiple PRs: ${commit.message}`,
+      `Commit ${commit.oid} has no associated PR: ${commit.message}`,
     );
   }
 
-  return associatedPRs[0].number;
+  return associatedPR.number;
 }
 
 async function getPRsInfo(

src/introspection/introspection.ts

@@ -65,14 +65,14 @@ function removeRelayTypes(schema: GraphQLSchema) {
         }
 
         const connectionFields = connectionType.getFields();
-        const edgeType = getNamedType(connectionFields.edges?.type);
-        if (!isObjectType(edgeType) || connectionFields.pageInfo == null) {
+        const edgeType = getNamedType(connectionFields['edges']?.type);
+        if (!isObjectType(edgeType) || connectionFields['pageInfo'] == null) {
           continue;
         }
 
         const edgeFields = edgeType.getFields();
-        const nodeType = edgeFields.node?.type;
-        if (nodeType == null || edgeFields.cursor == null) {
+        const nodeType = edgeFields['node']?.type;
+        if (nodeType == null || edgeFields['cursor'] == null) {
           continue;
         }
 

src/introspection/utils.ts

@@ -17,7 +17,7 @@ export function typeNameToId(name: string) {
   return `TYPE::${name}`;
 }
 
-export function extractTypeName(typeID: string) {
+export function extractTypeName(typeID: string): string {
   const [, type] = typeID.split('::');
   return type;
 }

tsconfig.json

@@ -1,10 +1,30 @@
 {
   "compilerOptions": {
+    // copy of https://github.com/tsconfig/bases/blob/main/bases/strictest.json
+    "strict": true,
+    "allowUnusedLabels": false,
+    "allowUnreachableCode": false,
+    // FIXME: "exactOptionalPropertyTypes": true,
+    "noFallthroughCasesInSwitch": true,
+    // FIXME: "noImplicitOverride": true,
+    "noImplicitReturns": true,
+    "noPropertyAccessFromIndexSignature": true,
+    // FIXME: "noUncheckedIndexedAccess": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+
+    "isolatedModules": true,
+
+    "checkJs": true,
+
+    // FIXME: "esModuleInterop": true,
+    "skipLibCheck": true,
+    // end copy
+
     "module": "es2015",
     "moduleResolution": "node",
     "target": "es2021",
     "allowSyntheticDefaultImports": true,
-    "strict": true,
     "sourceMap": true,
     "noEmit": true,
     "pretty": true,