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MIRROR: javascript for 🐜's, a tiny runtime with big ambitions ant.themackabu.dev
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12345678910111213141516171819202122232425262728293031323334353637let passed = 0;let failed = 0;
function test(name, actual, expected) { if (actual === expected) { console.log("PASS:", name); passed++; return; } console.log("FAIL:", name, "- expected", expected, "got", actual); failed++;}
const ctx = { total: 0, seen: "" };[1, 2, 3].forEach(function (n) { this.total += n; this.seen += String(n);}, ctx);test("forEach thisArg", ctx.total, 6);test("forEach callback this binding", ctx.seen, "123");
const mapped = [1, 2].map(function (n) { return this.base + n;}, { base: 10 });test("map thisArg", mapped[0], 11);test("map thisArg second value", mapped[1], 12);
const found = [1, 2, 3].find(function (n) { return n > this.min;}, { min: 2 });test("find thisArg", found, 3);
console.log("Passed:", passed);console.log("Failed:", failed);
if (failed > 0) throw new Error("test_array_callback_thisarg failed");