| 1 | ;
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| 2 | Object.defineProperty(exports, "__esModule", { value: true });
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| 3 | exports.Reflector = void 0;
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| 4 | const shared_utils_1 = require("@nestjs/common/utils/shared.utils");
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| 5 | /**
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| 6 | * Helper class providing Nest reflection capabilities.
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| 7 | *
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| 8 | * @see [Reflection](https://docs.nestjs.com/guards#putting-it-all-together)
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| 9 | *
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| 10 | * @publicApi
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| 11 | */
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| 12 | class Reflector {
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| 13 | /**
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| 14 | * Retrieve metadata for a specified key for a specified target.
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| 15 | *
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| 16 | * @example
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| 17 | * `const roles = this.reflector.get<string[]>('roles', context.getHandler());`
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| 18 | *
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| 19 | * @param metadataKey lookup key for metadata to retrieve
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| 20 | * @param target context (decorated object) to retrieve metadata from
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| 21 | *
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| 22 | */
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| 23 | get(metadataKey, target) {
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| 24 | return Reflect.getMetadata(metadataKey, target);
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| 25 | }
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| 26 | /**
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| 27 | * Retrieve metadata for a specified key for a specified set of targets.
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| 28 | *
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| 29 | * @param metadataKey lookup key for metadata to retrieve
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| 30 | * @param targets context (decorated objects) to retrieve metadata from
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| 31 | *
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| 32 | */
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| 33 | getAll(metadataKey, targets) {
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| 34 | return (targets || []).map(target => Reflect.getMetadata(metadataKey, target));
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| 35 | }
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| 36 | /**
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| 37 | * Retrieve metadata for a specified key for a specified set of targets and merge results.
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| 38 | *
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| 39 | * @param metadataKey lookup key for metadata to retrieve
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| 40 | * @param targets context (decorated objects) to retrieve metadata from
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| 41 | *
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| 42 | */
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| 43 | getAllAndMerge(metadataKey, targets) {
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| 44 | const metadataCollection = this.getAll(metadataKey, targets).filter(item => item !== undefined);
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| 45 | if ((0, shared_utils_1.isEmpty)(metadataCollection)) {
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| 46 | return metadataCollection;
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| 47 | }
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| 48 | return metadataCollection.reduce((a, b) => {
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| 49 | if (Array.isArray(a)) {
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| 50 | return a.concat(b);
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| 51 | }
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| 52 | if ((0, shared_utils_1.isObject)(a) && (0, shared_utils_1.isObject)(b)) {
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| 53 | return Object.assign(Object.assign({}, a), b);
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| 54 | }
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| 55 | return [a, b];
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| 56 | });
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| 57 | }
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| 58 | /**
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| 59 | * Retrieve metadata for a specified key for a specified set of targets and return a first not undefined value.
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| 60 | *
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| 61 | * @param metadataKey lookup key for metadata to retrieve
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| 62 | * @param targets context (decorated objects) to retrieve metadata from
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| 63 | *
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| 64 | */
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| 65 | getAllAndOverride(metadataKey, targets) {
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| 66 | const metadataCollection = this.getAll(metadataKey, targets).filter(item => item !== undefined);
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| 67 | return metadataCollection[0];
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| 68 | }
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| 69 | }
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| 70 | exports.Reflector = Reflector;
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