@nestjs/core
Version:
Nest - modern, fast, powerful node.js web framework (@core)
56 lines (55 loc) • 2.04 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.ContextUtils = void 0;
const constants_1 = require("@nestjs/common/constants");
const shared_utils_1 = require("@nestjs/common/utils/shared.utils");
const execution_context_host_1 = require("./execution-context-host");
class ContextUtils {
mapParamType(key) {
const keyPair = key.split(':');
return keyPair[0];
}
reflectCallbackParamtypes(instance, methodName) {
return Reflect.getMetadata(constants_1.PARAMTYPES_METADATA, instance, methodName);
}
reflectCallbackMetadata(instance, methodName, metadataKey) {
return Reflect.getMetadata(metadataKey, instance.constructor, methodName);
}
reflectPassthrough(instance, methodName) {
return Reflect.getMetadata(constants_1.RESPONSE_PASSTHROUGH_METADATA, instance.constructor, methodName);
}
getArgumentsLength(keys, metadata) {
return keys.length
? Math.max(...keys.map(key => metadata[key].index)) + 1
: 0;
}
createNullArray(length) {
const a = new Array(length);
for (let i = 0; i < length; ++i)
a[i] = undefined;
return a;
}
mergeParamsMetatypes(paramsProperties, paramtypes) {
if (!paramtypes) {
return paramsProperties;
}
return paramsProperties.map(param => ({
...param,
metatype: paramtypes[param.index],
}));
}
getCustomFactory(factory, data, contextFactory) {
return (0, shared_utils_1.isFunction)(factory)
? (...args) => factory(data, contextFactory(args))
: () => null;
}
getContextFactory(contextType, instance, callback) {
const type = instance && instance.constructor;
return (args) => {
const ctx = new execution_context_host_1.ExecutionContextHost(args, type, callback);
ctx.setType(contextType);
return ctx;
};
}
}
exports.ContextUtils = ContextUtils;