✨ Add equality of Uint8ClampedArray

Closes #18
TomokiMiyauci · May 31, 2021 · 495666e · 495666e
1 parent abbc99a
commit 495666e
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Showing 4 changed files with 55 additions and 1 deletion.
diff --git a/README.md b/README.md
@@ -154,7 +154,7 @@ equal(+0, -0) // true
 The following objects work correctly.
 
 - [`Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array)
-- [`Typed Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Typed_arrays) ( [Int8Array](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Int8Array), [Uint8Array](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array) )
+- [`Typed Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Typed_arrays) ( [Int8Array](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Int8Array), [Uint8Array](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array), [Uint8ClampedArray](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8ClampedArray) )
 - [`Object`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object)
 - [`Date`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date)
 - [`Error`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error) ( [`EvalError`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/EvalError), [`RangeError`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RangeError), [`ReferenceError`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ReferenceError), [`SyntaxError`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/SyntaxError), [`TypeError`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypeError), [`URIError`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/URIError), [`AggregateError`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/AggregateError) )

diff --git a/_is.ts b/_is.ts
@@ -35,6 +35,7 @@ const isBothURL = instanceofFactory(URL);
 const isBothURLSearchParams = instanceofFactory(URLSearchParams);
 const isBothInt8Array = instanceofFactory(Int8Array);
 const isBothUint8Array = instanceofFactory(Uint8Array);
+const isBothUint8ClampedArray = instanceofFactory(Uint8ClampedArray);
 
 export {
   isBothArray,
@@ -50,6 +51,7 @@ export {
   isBothRegExp,
   isBothSet,
   isBothUint8Array,
+  isBothUint8ClampedArray,
   isBothURL,
   isBothURLSearchParams,
 };
diff --git a/equal.ts b/equal.ts
@@ -14,6 +14,7 @@ import {
   isBothRegExp,
   isBothSet,
   isBothUint8Array,
+  isBothUint8ClampedArray,
   isBothURL,
   isBothURLSearchParams,
 } from "./_is.ts";
@@ -57,6 +58,7 @@ const equal = <T, U extends T>(a: T, b: U): boolean => {
     [isBothSet, equalSet],
     [isBothInt8Array, equalInt8Array],
     [isBothUint8Array, equalUint8Array],
+    [isBothUint8ClampedArray, equalUint8ClampedArray],
     [isBothURL, equalURL],
     [isBothURLSearchParams, equalURLSearchParams],
     [isBothObjectExcludeJSON, equalObjectExcludeJson],
@@ -194,6 +196,11 @@ const equalUint8Array = <T extends Uint8Array, U extends T>(
   b: U,
 ): boolean => equalArray([...a], [...b]);
 
+const equalUint8ClampedArray = <T extends Uint8ClampedArray, U extends T>(
+  a: T,
+  b: U,
+): boolean => equalArray([...a], [...b]);
+
 const equalURL = <T extends URL, U extends T>(a: T, b: U): boolean =>
   a.toString() === b.toString();
 const equalURLSearchParams = <T extends URLSearchParams, U extends T>(
@@ -217,6 +224,7 @@ export {
   equalRegExp,
   equalSet,
   equalUint8Array,
+  equalUint8ClampedArray,
   equalURL,
   equalURLSearchParams,
 };
diff --git a/equal_test.ts b/equal_test.ts
@@ -16,6 +16,7 @@ import {
   equalRegExp,
   equalSet,
   equalUint8Array,
+  equalUint8ClampedArray,
   equalURL,
   equalURLSearchParams,
 } from "./equal.ts";
@@ -310,6 +311,48 @@ Deno.test("equalUint8Array", () => {
   });
 });
 
+Deno.test("equalUint8ClampedArray", () => {
+  const table: [Uint8ClampedArray, Uint8ClampedArray, boolean][] = [
+    [new Uint8ClampedArray(), new Uint8ClampedArray(), true],
+    [new Uint8ClampedArray([]), new Uint8ClampedArray(), true],
+    [new Uint8ClampedArray(), new Uint8ClampedArray([]), true],
+    [new Uint8ClampedArray([]), new Uint8ClampedArray([]), true],
+    [new Uint8ClampedArray(0), new Uint8ClampedArray(0), true],
+    [new Uint8ClampedArray(0), new Uint8ClampedArray(), true],
+    [new Uint8ClampedArray(), new Uint8ClampedArray(0), true],
+    [new Uint8ClampedArray(0), new Uint8ClampedArray(1), false],
+    [new Uint8ClampedArray(1), new Uint8ClampedArray(1), true],
+    [new Uint8ClampedArray([1, 2, 3]), new Uint8ClampedArray([1, 2, 3]), true],
+    [
+      new Uint8ClampedArray([255, -128, 0]),
+      new Uint8ClampedArray([255, -128, 0]),
+      true,
+    ],
+    [
+      new Uint8ClampedArray([256]),
+      new Uint8ClampedArray([255]),
+      true,
+    ],
+    [
+      new Uint8ClampedArray([255, -128, 0]),
+      new Uint8ClampedArray([127, -128, 1]),
+      false,
+    ],
+    [
+      new Uint8ClampedArray([255, 0]),
+      new Uint8ClampedArray([255, 0, 0]),
+      false,
+    ],
+  ];
+  table.forEach(([a, b, expected]) => {
+    assertEquals(
+      equalUint8ClampedArray(a, b),
+      expected,
+      `equalUint8ClampedArray(${a}, ${b}) -> ${expected}`,
+    );
+  });
+});
+
 Deno.test("equalRegExp", () => {
   const table: [RegExp, RegExp, boolean][] = [
     [/s/, /s/, true],
@@ -1012,6 +1055,7 @@ Deno.test("equal", () => {
     ],
     [new Int8Array(), new Int8Array(), true],
     [new Uint8Array(), new Uint8Array(), true],
+    [new Uint8ClampedArray(), new Uint8ClampedArray(), true],
     [new Uint16Array(), new Uint16Array(), false],
   ];
   table.forEach(([a, b, expected]) => {