@frauschert/ts-guard/lib/guards/isArrayOf/isArrayOf.js

ts-guard is a typescript library that provides composable type guards. Its inspired by zod but focusses only on type guards and is more lightweight.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.isArrayOf = void 0;
const isArrayOf = (itemGuard, constraints) => (x) => {
    if (!Array.isArray(x)) {
        return false;
    }
    if (!x.every(itemGuard)) {
        return false;
    }
    if (constraints) {
        if (constraints.minLength !== undefined && x.length < constraints.minLength) {
            return false;
        }
        if (constraints.maxLength !== undefined && x.length > constraints.maxLength) {
            return false;
        }
        if (constraints.unique && new Set(x).size !== x.length) {
            return false;
        }
    }
    return true;
};
exports.isArrayOf = isArrayOf;
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