refactor: convert @ts-ignore to @ts-expect-error where the error always fires

_tools/check_docs.ts

@@ -131,7 +131,7 @@ function assertHasParamTag(
   );
   if (tag === undefined) return;
   assert(
-    // @ts-ignore doc is defined
+    // @ts-expect-error doc is defined
     tag.doc !== undefined,
     `@param tag for ${param} must have a description`,
     document,
@@ -205,7 +205,7 @@ function assertHasTypeParamTags(
   );
   if (tag === undefined) return;
   assert(
-    // @ts-ignore doc is defined
+    // @ts-expect-error doc is defined
     tag.doc !== undefined,
     `@typeParam tag for ${typeParamName} must have a description`,
     document,

collections/includes_value_test.ts

@@ -105,7 +105,7 @@ Deno.test("includesValue() handles NaN value", () => {
 
 Deno.test("includesValue() prevents enumerable prototype check", () => {
   class Foo {}
-  // @ts-ignore: for test
+  // @ts-expect-error: for test
   Foo.prototype.a = "hello";
   const input = new Foo() as Record<string, string>;
 

collections/sliding_windows_test.ts

@@ -152,13 +152,13 @@ Deno.test({
       "Cannot create sliding windows: step must be a positive integer, current value is NaN",
     );
     slidingWindowsThrowsTest(
-      // @ts-ignore: for test
+      // @ts-expect-error: for test
       [[1, 2, 3, 4, 5], "invalid"],
       RangeError,
       "Cannot create sliding windows: size must be a positive integer, current value is invalid",
     );
     slidingWindowsThrowsTest(
-      // @ts-ignore: for test
+      // @ts-expect-error: for test
       [[1, 2, 3, 4, 5], 3, { step: "invalid" }],
       RangeError,
       "Cannot create sliding windows: step must be a positive integer, current value is invalid",

crypto/crypto_test.ts

@@ -1769,7 +1769,7 @@ Deno.test("digest() throws on invalid algorithm", async () => {
   // runtime and its wording differs across versions (e.g. "Unrecognized
   // algorithm name" vs. "Algorithm 'invalid' is not supported").
   await assertRejects(
-    // @ts-ignore Algorithm name is invalid on purpose
+    // @ts-expect-error Algorithm name is invalid on purpose
     async () => await stdCrypto.subtle.digest("invalid", new Uint8Array(0)),
     DOMException,
   );

csv/unstable_stringify_test.ts

@@ -37,7 +37,7 @@ Deno.test("(unstable) stringify", async (t) => {
         const options = { columns: true };
         const data = [{ a: 1 }];
         assertThrows(
-          // @ts-ignore: for test
+          // @ts-expect-error: for test
           () => stringify(data, options),
           "Cannot stringify data as the columns option is invalid: columns must be an array or undefined",
         );
@@ -52,7 +52,7 @@ Deno.test("(unstable) stringify", async (t) => {
         const options = { columns: { v: true } };
         const data = [{ a: 1 }];
         assertThrows(
-          // @ts-ignore: for test
+          // @ts-expect-error: for test
           () => stringify(data, options),
           "Cannot stringify data as the columns option is invalid: columns must be an array or undefined",
         );
@@ -67,7 +67,7 @@ Deno.test("(unstable) stringify", async (t) => {
         const options = { columns: 127 };
         const data = [{ a: 1 }];
         assertThrows(
-          // @ts-ignore: for test
+          // @ts-expect-error: for test
           () => stringify(data, options),
           "Cannot stringify data as the columns option is invalid: columns must be an array or undefined",
         );
@@ -82,7 +82,7 @@ Deno.test("(unstable) stringify", async (t) => {
         const options = { columns: "i am a string" };
         const data = [{ a: 1 }];
         assertThrows(
-          // @ts-ignore: for test
+          // @ts-expect-error: for test
           () => stringify(data, options),
           "Cannot stringify data as the columns option is invalid: columns must be an array or undefined",
         );

random/_test_utils.ts

@@ -37,7 +37,7 @@ export function mockLittleEndian(littleEndian: boolean) {
     const TypedArray = globalThis[`${type}Array`];
 
     const MockTypedArray = class extends TypedArray {
-      // @ts-ignore missing super() call
+      // @ts-expect-error missing super() call
       constructor(...args: any[]) {
         const target = new TypedArray(...args);
         const dv = new DataView(
@@ -101,11 +101,11 @@ export function mockLittleEndian(littleEndian: boolean) {
       }
     };
 
-    // @ts-ignore mock
+    // @ts-expect-error mock
     globalThis[`${type}Array`] = MockTypedArray;
 
     stack.defer(() => {
-      // @ts-ignore restore mock
+      // @ts-expect-error restore mock
       globalThis[`${type}Array`] = TypedArray;
     });
   }

testing/mock.ts

@@ -725,7 +725,7 @@ function constructorSpy<
 ): ConstructorSpy<Self, Args> {
   const original = constructor;
   const calls: SpyCall<Self, Args, Self>[] = [];
-  // @ts-ignore TS2509: Can't know the type of `original` statically.
+  // @ts-expect-error TS2509: Can't know the type of `original` statically.
   const spy = class extends original {
     // deno-lint-ignore constructor-super
     constructor(...args: Args) {

text/unstable_dedent_test.ts

@@ -90,7 +90,7 @@ Deno.test("dedent() handles multiline substitution", () => {
 });
 
 Deno.test("dedent() handles mixed tabs and spaces", async (t) => {
-  // @ts-ignore augmenting globalThis so we don't need to resort to bare `eval`
+  // @ts-expect-error augmenting globalThis so we don't need to resort to bare `eval`
   using _ = stub(globalThis, "dedent", dedent);
 
   await t.step("with partial common prefix", () => {
@@ -109,7 +109,7 @@ Deno.test("dedent() handles mixed tabs and spaces", async (t) => {
 });
 
 Deno.test("dedent() handles blank lines correctly", async (t) => {
-  // @ts-ignore augmenting globalThis so we don't need to resort to bare `eval`
+  // @ts-expect-error augmenting globalThis so we don't need to resort to bare `eval`
   using _ = stub(globalThis, "dedent", dedent);
 
   for (const lineEnding of ["\n", "\r\n"]) {