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MIRROR: javascript for 🐜's, a tiny runtime with big ambitions ant.themackabu.dev
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12345678910111213141516171819202122232425262728293031323334const assert = (cond, msg) => { if (!cond) throw new Error(msg);};
let captured;function tag(strings) { captured = strings; return strings;}
const first = tag`a${1}b`;const sameTextDifferentSite = tag`a${2}b`;
function sameSite(value) { return tag`a${value}b`;}
const sameSiteFirst = sameSite(1);const sameSiteSecond = sameSite(2);
assert(typeof Array.isTemplateObject === "function", "Array.isTemplateObject should exist");assert(Array.isTemplateObject(first) === true, "tagged template strings array should be a template object");assert(Array.isTemplateObject(first.raw) === false, "raw array should not be a template object");assert(Array.isTemplateObject([]) === false, "ordinary array should not be a template object");assert(Array.isTemplateObject(Object.freeze(["a", "b"])) === false, "frozen ordinary array should not be a template object");assert(Array.isTemplateObject({ raw: ["a"] }) === false, "ordinary object should not be a template object");assert(Array.isTemplateObject("not an array") === false, "primitive should not be a template object");assert(Array.isTemplateObject() === false, "missing argument should return false");assert(first !== sameTextDifferentSite, "different template sites should not reuse the same object");assert(sameSiteFirst === sameSiteSecond, "same template site should reuse the same object");assert(captured === sameSiteSecond, "tag should receive cached template object");
console.log("Array.isTemplateObject tests ok");