diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4e04386fcc..8a6fbbb4f8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,6 +23,8 @@ jobs:
     steps:
     - uses: actions/checkout@v1
     - uses: actions/setup-node@v1
+      with:
+        node-version: 14
     - run: 'npm i && npm run lint'
   Unit:
     runs-on: ${{ matrix.os }}
diff --git a/ci-script/.gitignore b/ci-script/.gitignore
new file mode 100644
index 0000000000..b62e5d44d8
--- /dev/null
+++ b/ci-script/.gitignore
@@ -0,0 +1 @@
+observed-errors-*.log
diff --git a/ci-script/tsc-strict-error.mjs b/ci-script/tsc-strict-error.mjs
new file mode 100644
index 0000000000..04afea6e7b
--- /dev/null
+++ b/ci-script/tsc-strict-error.mjs
@@ -0,0 +1,59 @@
+const dirToCheck = [
+    'compiler',
+    'runtime',
+]
+const tsErrorsThreshold = [
+    883,  /* 'compiler' */
+    362,  /* 'runtime' */
+];
+
+import { promisify } from 'util';
+import { exec as execCallback } from 'child_process';
+const exec = promisify(execCallback);
+
+const identity = i => i;
+
+async function main() {
+    const errors = await Promise.all(dirToCheck.map(dir => getTsErrors(dir)));
+    const errorsCount = errors.map(countTsErrors);
+    const noop = () => void 0;
+
+    let conditionallyPrintError = [noop, noop];
+    let conditionallyExplainError = noop;
+    let printErrorCount = [noop, noop];
+    let conditionallyAskForFix = noop;
+    let conditionallyExitWithNonZeroCode = noop;
+
+    for (let i = 0; i < tsErrorsThreshold.length; i++) {
+        if(errorsCount[i] > tsErrorsThreshold[i]) {
+            conditionallyPrintError[i] = () => console.log(errors[i]);
+            conditionallyExplainError = () => console.log(`This project is in the processing of enforcing TypeScript's "strict": true`);
+            printErrorCount[i] = () => printErrorFromCompileCount(dirToCheck[i], errorsCount[i], tsErrorsThreshold[i], 'higher than')
+            conditionallyAskForFix = () => console.log(`Please fix the some of the above mentioned errors to bring the number of errors below the allowed threshold`);
+            conditionallyExitWithNonZeroCode = () => process.exit(42);
+        } else {
+            printErrorCount[i] = () => printErrorFromCompileCount(dirToCheck[i], errorsCount[i], tsErrorsThreshold[i], 'less than or equal to')
+        }
+    }
+    conditionallyPrintError.forEach(f => f());
+    conditionallyExplainError();
+    printErrorCount.forEach(f => f());
+    conditionallyAskForFix()
+    conditionallyExitWithNonZeroCode();
+}
+
+main();
+
+async function getTsErrors(dir) {
+    const { stdout } = await exec(`npx tsc -p src/${dir} --noEmit`).then(identity, identity);
+    return stdout
+
+}
+
+function countTsErrors(stdout) {
+    return (stdout.match(/error TS/g) || []).length
+}
+
+function printErrorFromCompileCount (dir, count, allowed, operator ) {
+    console.log(`in src/${dir}: The number of errors resulting from TypeScript's "strict": true is, ${count}, ${operator} allowed ${allowed}`);
+}
\ No newline at end of file
diff --git a/package.json b/package.json
index 61c213494c..ce837301e6 100644
--- a/package.json
+++ b/package.json
@@ -74,8 +74,9 @@
     "pretest": "npm run build",
     "posttest": "agadoo internal/index.mjs",
     "prepublishOnly": "npm run lint && PUBLISH=true npm test",
-    "tsd": "tsc -p src/compiler --emitDeclarationOnly && tsc -p src/runtime --emitDeclarationOnly",
-    "lint": "eslint \"{src,test}/**/*.{ts,js}\""
+    "tsd": "tsc -p src/compiler --emitDeclarationOnly --strict false && tsc -p src/runtime --emitDeclarationOnly --strict false",
+    "tsc-strict-error": "node ci-script/tsc-strict-error.mjs --unhandled-rejections=strict",
+    "lint": "npm run tsc-strict-error && eslint \"{src,test}/**/*.{ts,js}\""
   },
   "repository": {
     "type": "git",
diff --git a/tsconfig.json b/tsconfig.json
index 39476f3dd1..fd12c0cd49 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -21,8 +21,7 @@
 		"resolveJsonModule": true,
 		"allowSyntheticDefaultImports": true,
 
-		// TODO: error all the things
-		//"strict": true,
+		"strict": true,
 		"noImplicitThis": true,
 		"noUnusedLocals": true,
 		"noUnusedParameters": true