jsmodern/dist/array/ends-with.js

An extension to existing JavaScript, influenced by other great languages such as Rust, Dart, Java, Golang, etc.

export const endsWith = {
    label: 'endsWith',
    fn: function arrayEndsWith(needle) {
        const ctx = this;
        if (!Array.isArray(needle)) {
            throw new TypeError(`Expect 'needle' to be an array`);
        }
        const ctxLen = ctx.length;
        const len = needle.length;
        if (!len)
            return true;
        if (!ctxLen || ctxLen < len)
            return false;
        const offsetIndex = ctxLen - len;
        let matched = 1;
        for (let i = 0; i < len; i += 1) {
            const val = needle[i];
            matched &= Number(val === ctx[i + offsetIndex]);
        }
        return Boolean(matched);
    },
};
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