@nestjs/core
Version:
Nest - modern, fast, powerful node.js web framework (@core)
42 lines (41 loc) • 1.77 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.ByReferenceModuleOpaqueKeyFactory = void 0;
const random_string_generator_util_1 = require("@nestjs/common/utils/random-string-generator.util");
const crypto_1 = require("crypto");
const K_MODULE_ID = Symbol('K_MODULE_ID');
class ByReferenceModuleOpaqueKeyFactory {
constructor(options) {
this.keyGenerationStrategy = options?.keyGenerationStrategy ?? 'random';
}
createForStatic(moduleCls, originalRef = moduleCls) {
return this.getOrCreateModuleId(moduleCls, undefined, originalRef);
}
createForDynamic(moduleCls, dynamicMetadata, originalRef) {
return this.getOrCreateModuleId(moduleCls, dynamicMetadata, originalRef);
}
getOrCreateModuleId(moduleCls, dynamicMetadata, originalRef) {
if (originalRef[K_MODULE_ID]) {
return originalRef[K_MODULE_ID];
}
let moduleId;
if (this.keyGenerationStrategy === 'random') {
moduleId = this.generateRandomString();
}
else {
const delimiter = ':';
moduleId = dynamicMetadata
? `${this.generateRandomString()}${delimiter}${this.hashString(moduleCls.name + JSON.stringify(dynamicMetadata))}`
: `${this.generateRandomString()}${delimiter}${this.hashString(moduleCls.toString())}`;
}
originalRef[K_MODULE_ID] = moduleId;
return moduleId;
}
hashString(value) {
return (0, crypto_1.createHash)('sha256').update(value).digest('hex');
}
generateRandomString() {
return (0, random_string_generator_util_1.randomStringGenerator)();
}
}
exports.ByReferenceModuleOpaqueKeyFactory = ByReferenceModuleOpaqueKeyFactory;