diff --git a/dev-infra/BUILD.bazel b/dev-infra/BUILD.bazel
index db10ba96d31e5b..6dcb99ee115e87 100644
--- a/dev-infra/BUILD.bazel
+++ b/dev-infra/BUILD.bazel
@@ -78,6 +78,7 @@ pkg_npm(
         "//dev-infra/benchmark/driver-utilities",
         "//dev-infra/commit-message",
         "//dev-infra/ts-circular-dependencies",
+        "//dev-infra/tslint-rules",
     ],
 )
 
diff --git a/package.json b/package.json
index 3396ed121555d5..bea065d7233f0a 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
     "test-fixme-ivy-aot": "bazelisk test --config=ivy --build_tag_filters=-no-ivy-aot --test_tag_filters=-no-ivy-aot",
     "list-fixme-ivy-targets": "bazelisk query --output=label 'attr(\"tags\", \"\\[.*fixme-ivy.*\\]\", //...) except kind(\"sh_binary\", //...) except kind(\"devmode_js_sources\", //...)' | sort",
     "lint": "yarn -s tslint && yarn -s ng-dev format changed --check",
-    "tslint": "tsc -p tools/tsconfig.json && tslint -c tslint.json \"+(dev-infra|packages|modules|scripts|tools)/**/*.+(js|ts)\"",
+    "tslint": "tslint -c tslint.json --project tsconfig-tslint.json",
     "public-api:check": "node goldens/public-api/manage.js test",
     "public-api:update": "node goldens/public-api/manage.js accept",
     "symbol-extractor:check": "node tools/symbol-extractor/run_all_symbols_extractor_tests.js test",
diff --git a/tools/contributing-stats/get-data.ts b/tools/contributing-stats/get-data.ts
index 69d81c275e6731..7148d2796fe0e5 100644
--- a/tools/contributing-stats/get-data.ts
+++ b/tools/contributing-stats/get-data.ts
@@ -237,7 +237,8 @@ async function run(date: string) {
     console.info(['Username', ...buildQueryAndParams('', date).labels].join(','));
 
     for (const username of allOrgMembers) {
-      const results = await graphql(buildQueryAndParams(username, date).query.toString());
+      const results: [{issueCount: number}] =
+          await graphql(buildQueryAndParams(username, date).query.toString());
       const values = Object.values(results).map(result => `${result.issueCount}`);
       console.info([username, ...values].join(','));
     }
diff --git a/tools/size-tracking/size_tracker.ts b/tools/size-tracking/size_tracker.ts
index fc2e2c25356bff..d5e44acad1e019 100644
--- a/tools/size-tracking/size_tracker.ts
+++ b/tools/size-tracking/size_tracker.ts
@@ -94,7 +94,7 @@ export class SizeTracker {
     filePath = filePath.replace(/\\/g, '/');
 
     // Workaround for https://github.com/angular/angular/issues/30060
-    if (process.env['BAZEL_TARGET'].includes('test/bundling/core_all:size_test')) {
+    if (process.env['BAZEL_TARGET']!.includes('test/bundling/core_all:size_test')) {
       return filePath.replace(/^(\.\.\/)+external/, 'external')
           .replace(/^(\.\.\/)+packages\/core\//, '@angular/core/')
           .replace(/^(\.\.\/){3}/, '@angular/core/');
diff --git a/tools/tsconfig.json b/tools/tsconfig.json
index 086b31659960e8..fd556c35e4e4f2 100644
--- a/tools/tsconfig.json
+++ b/tools/tsconfig.json
@@ -6,6 +6,7 @@
     "experimentalDecorators": true,
     "module": "commonjs",
     "moduleResolution": "node",
+    "strict": true,
     "outDir": "../dist/tools/",
     "noImplicitAny": true,
     "noFallthroughCasesInSwitch": true,
diff --git a/tools/tslint/requireInternalWithUnderscoreRule.ts b/tools/tslint/requireInternalWithUnderscoreRule.ts
index 9f73e5f434bc39..33a1865024b4fb 100644
--- a/tools/tslint/requireInternalWithUnderscoreRule.ts
+++ b/tools/tslint/requireInternalWithUnderscoreRule.ts
@@ -47,6 +47,6 @@ class TypedefWalker extends RuleWalker {
     }
     this.addFailure(this.createFailure(
         node.getStart(), node.getWidth(),
-        `module-private member ${node.name.getText()} must be annotated @internal`));
+        `module-private member ${node.name?.getText()} must be annotated @internal`));
   }
 }
diff --git a/tsconfig-tslint.json b/tsconfig-tslint.json
new file mode 100644
index 00000000000000..e5a235c7c904f4
--- /dev/null
+++ b/tsconfig-tslint.json
@@ -0,0 +1,12 @@
+{
+  "compilerOptions": {
+    "allowJs": true
+  },
+  "include": [
+    "dev-infra/**/*",
+    "packages/**/*",
+    "modules/**/*",
+    "tools/**/*",
+    "scripts/**/*"
+  ]
+}
diff --git a/tslint.json b/tslint.json
index 9c0ccf7fc31a30..a08ecf0e5d58d2 100644
--- a/tslint.json
+++ b/tslint.json
@@ -1,11 +1,19 @@
 {
   "rulesDirectory": [
-    "dist/tools/tslint",
+    "tools/tslint",
+    "dev-infra/tslint-rules",
     "node_modules/vrsource-tslint-rules/rules",
     "node_modules/tslint-eslint-rules/dist/rules",
     "node_modules/tslint-no-toplevel-property-access/rules"
   ],
   "rules": {
+    // The first rule needs to be `ts-node-loader` which sets up `ts-node` within TSLint so
+    // that rules written in TypeScript can be loaded without needing to be transpiled.
+    "ts-node-loader": true,
+    // Custom rules written in TypeScript.
+    "require-internal-with-underscore": true,
+    "no-implicit-override-abstract": true,
+
     "eofline": true,
     "file-header": [
       true,
@@ -26,7 +34,6 @@
       true,
       "object"
     ],
-    "require-internal-with-underscore": true,
     "no-toplevel-property-access": [
       true,
       "packages/animations/src/",
@@ -57,6 +64,12 @@
     ]
   },
   "jsRules": {
+    // The first rule needs to be `ts-node-loader` which sets up `ts-node` within TSLint so
+    // that rules written in TypeScript can be loaded without needing to be transpiled.
+    "ts-node-loader": true,
+    // Custom rules written in TypeScript.
+    "require-internal-with-underscore": true,
+
     "eofline": true,
     "file-header": [
       true,
@@ -71,7 +84,6 @@
     ],
     "no-duplicate-imports": true,
     "no-duplicate-variable": true,
-    "require-internal-with-underscore": true,
     "semicolon": [
       true
     ],