54 lines
976 B
JavaScript
54 lines
976 B
JavaScript
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'use strict';
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const lazy = (mod, fn, id) => mod === undefined ? fn(id) : mod;
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module.exports = fn => {
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return id => {
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let mod;
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return function () {
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if (arguments.length === 0) {
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mod = lazy(mod, fn, id);
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return mod;
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}
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const ret = {};
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[].forEach.call(arguments, prop => {
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Object.defineProperty(ret, prop, {
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get: () => {
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mod = lazy(mod, fn, id);
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if (typeof mod[prop] === 'function') {
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return function () {
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return mod[prop].apply(mod, arguments);
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};
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}
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return mod[prop];
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}
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});
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});
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return ret;
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};
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};
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};
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module.exports.proxy = fn => {
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return id => {
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let mod;
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const handler = {
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get: (target, property) => {
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mod = lazy(mod, fn, id);
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return Reflect.get(mod, property);
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},
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apply: (target, thisArg, argumentsList) => {
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mod = lazy(mod, fn, id);
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return Reflect.apply(mod, thisArg, argumentsList);
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}
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};
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return new Proxy(() => {}, handler);
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};
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};
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