jsmodern/dist/array/select.js

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

export const select = {
    label: 'select',
    fn: function arraySelect(callbackFn) {
        const ctx = this;
        const len = ctx.length;
        if ('function' !== typeof (callbackFn)) {
            throw new TypeError(`Expect 'callbackFn' to be a function`);
        }
        if (!len)
            return [];
        const result = [];
        for (let i = 0; i < len; i += 1) {
            const n = ctx[i];
            if (callbackFn(n))
                result.push(n);
        }
        return result;
    },
};
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