37 lines
1.5 KiB
JavaScript
37 lines
1.5 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.getInjectionProviders = void 0;
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/**
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* check if x is OptionalFactoryDependency, based on prototype presence
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* (to avoid classes with a static 'token' field)
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* @param x
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* @returns x is OptionalFactoryDependency
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*/
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function isOptionalFactoryDependency(x) {
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return !!((x === null || x === void 0 ? void 0 : x.token) && !(x === null || x === void 0 ? void 0 : x.prototype));
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}
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const mapInjectToTokens = (t) => isOptionalFactoryDependency(t) ? t.token : t;
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/**
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*
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* @param providers List of a module's providers
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* @param tokens Injection tokens needed for a useFactory function (usually the module's options' token)
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* @returns All the providers needed for the tokens' injection (searched recursively)
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*/
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function getInjectionProviders(providers, tokens) {
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const result = [];
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let search = tokens.map(mapInjectToTokens);
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while (search.length > 0) {
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const match = (providers !== null && providers !== void 0 ? providers : []).filter(p => !result.includes(p) && // this prevents circular loops and duplication
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(search.includes(p) || search.includes(p === null || p === void 0 ? void 0 : p.provide)));
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result.push(...match);
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// get injection tokens of the matched providers, if any
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search = match
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.filter(p => p === null || p === void 0 ? void 0 : p.inject)
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.map(p => p.inject)
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.flat()
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.map(mapInjectToTokens);
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}
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return result;
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}
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exports.getInjectionProviders = getInjectionProviders;
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