本文整理汇总了TypeScript中@nestjs/common/utils/shared.utils.isUndefined方法的典型用法代码示例。如果您正苦于以下问题：TypeScript utils.isUndefined方法的具体用法？TypeScript utils.isUndefined怎么用？TypeScript utils.isUndefined使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类@nestjs/common/utils/shared.utils的用法示例。
在下文中一共展示了utils.isUndefined方法的10个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的TypeScript代码示例。
示例1: RuntimeException
public async loadInstance<T>(
wrapper: InstanceWrapper<T>,
collection: Map<string, InstanceWrapper<any>>,
module: Module,
) {
if (wrapper.isPending) {
return wrapper.done$;
}
const done = this.applyDoneHook(wrapper);
const { name, inject } = wrapper;
const targetWrapper = collection.get(name);
if (isUndefined(targetWrapper)) {
throw new RuntimeException();
}
if (targetWrapper.isResolved) {
return;
}
const callback = async instances => {
const properties = await this.resolveProperties(wrapper, module, inject);
const instance = await this.instantiateClass(
instances,
wrapper,
targetWrapper,
);
this.applyProperties(instance, properties);
done();
};
await this.resolveConstructorParams<T>(wrapper, module, inject, callback);
}示例2: iterate
public createConcreteContext<T extends any[], R extends any[]>(
metadata: T,
): R {
if (isUndefined(metadata) || isEmpty(metadata)) {
return [] as R;
}
return iterate(metadata)
.filter((guard: any) => guard && (guard.name || guard.canActivate))
.map(guard => this.getGuardInstance(guard))
.filter((guard: CanActivate) => guard && isFunction(guard.canActivate))
.toArray() as R;
}示例3: iterate
public createConcreteContext<T extends any[], R extends any[]>(
metadata: T,
): R {
if (isUndefined(metadata) || isEmpty(metadata)) {
return [] as R;
}
return iterate(metadata)
.filter((pipe: any) => pipe && (pipe.name || pipe.transform))
.map(pipe => this.getPipeInstance(pipe))
.filter(pipe => pipe && pipe.transform && isFunction(pipe.transform))
.map(pipe => pipe.transform.bind(pipe))
.toArray() as R;
}示例4: String
public *scanForServerHooks(instance: NestGateway): IterableIterator<string> {
for (const propertyKey in instance) {
if (isFunction(propertyKey)) {
continue;
}
const property = String(propertyKey);
const isServer = Reflect.getMetadata(
GATEWAY_SERVER_METADATA,
instance,
property,
);
if (!isUndefined(isServer)) {
yield property;
}
}
}示例5: UndefinedDependencyException
public async resolveSingleParam<T>(
wrapper: InstanceWrapper<T>,
param: Type<any> | string | symbol | any,
{ index, length }: { index: number; length: number },
module: Module,
) {
if (isUndefined(param)) {
throw new UndefinedDependencyException(wrapper.name, index, length);
}
const token = this.resolveParamToken(wrapper, param);
return await this.resolveComponentInstance<T>(
module,
isFunction(token) ? (token as Type<any>).name : token,
{ index, length },
wrapper,
);
}示例6: UndefinedDependencyException
public async resolveSingleParam<T>(
wrapper: InstanceWrapper<T>,
param: Type<any> | string | symbol | any,
dependencyContext: InjectorDependencyContext,
module: Module,
) {
if (isUndefined(param)) {
throw new UndefinedDependencyException(wrapper.name, dependencyContext, module);
}
const token = this.resolveParamToken(wrapper, param);
return this.resolveComponentInstance<T>(
module,
isFunction(token) ? (token as Type<any>).name : token,
dependencyContext,
wrapper,
);
}示例7: iterate
public createConcreteContext<T extends any[], R extends any[]>(
metadata: T,
): R {
if (isUndefined(metadata) || isEmpty(metadata)) {
return [] as R;
}
return iterate(metadata)
.filter(
instance => instance && (isFunction(instance.catch) || instance.name),
)
.map(filter => this.getFilterInstance(filter))
.map(instance => ({
func: instance.catch.bind(instance),
exceptionMetatypes: this.reflectCatchExceptions(instance),
}))
.toArray() as R;
}示例8: iterate
public createConcreteContext<T extends any[], R extends any[]>(
metadata: T,
): R {
if (isUndefined(metadata) || isEmpty(metadata)) {
return [] as R;
}
return iterate(metadata)
.filter(
(interceptor: any) =>
interceptor && (interceptor.name || interceptor.intercept),
)
.map(interceptor => this.getInterceptorInstance(interceptor))
.filter(
(interceptor: NestInterceptor) =>
interceptor && isFunction(interceptor.intercept),
)
.toArray() as R;
}示例9: String
public *scanForClientHooks(
instance: Controller,
): IterableIterator<ClientProperties> {
for (const propertyKey in instance) {
if (isFunction(propertyKey)) continue;
const property = String(propertyKey);
const isClient = Reflect.getMetadata(CLIENT_METADATA, instance, property);
if (isUndefined(isClient)) continue;
const metadata = Reflect.getMetadata(
CLIENT_CONFIGURATION_METADATA,
instance,
property,
);
yield { property, metadata };
}
}示例10: exploreMethodMetadata
public exploreMethodMetadata(
instancePrototype,
methodName: string,
): MessageMappingProperties {
const callback = instancePrototype[methodName];
const isMessageMapping = Reflect.getMetadata(
MESSAGE_MAPPING_METADATA,
callback,
);
if (isUndefined(isMessageMapping)) {
return null;
}
const message = Reflect.getMetadata(MESSAGE_METADATA, callback);
return {
callback,
message,
};
}