ts-ioc-container/esm/utils.js

Typescript IoC container

export const isConstructor = (T) => typeof T === 'function' && !!T.prototype;
export function isInstance(target) {
    return Object.prototype.hasOwnProperty.call(target, 'constructor');
}
export const pipe = (...mappers) => (value) => mappers.reduce((acc, current) => current(acc), value);
export function fillEmptyIndexes(baseArr, insertArr) {
    const a = [...baseArr];
    const b = [...insertArr];
    for (let i = 0; i < a.length; i++) {
        if (a[i] === undefined) {
            a[i] = b.shift();
        }
    }
    return a.concat(b);
}
export const constant = (value) => () => value;
export function lazyProxy(resolveInstance) {
    let instance;
    return new Proxy({}, {
        get: (_, prop) => {
            instance = instance ?? resolveInstance();
            // @ts-ignore
            return instance[prop];
        },
    });
}
export const promisify = (arg) => (arg instanceof Promise ? arg : Promise.resolve(arg));
export const List = {
    lastOf: (arr) => arr[arr.length - 1],
};
export const Filter = {
    exclude: (arr) => {
        const excludeSet = arr instanceof Array ? new Set(arr) : arr;
        return (v) => !excludeSet.has(v);
    },
};