@opentelemetry/core/dist/utils/merge.mjs.map

OpenTelemetry Core provides constants and utilities shared by all OpenTelemetry SDK packages.

{"version":3,"file":"merge.mjs","names":[],"sources":["../../src/utils/merge.ts"],"sourcesContent":["/*\n * Copyright The OpenTelemetry Authors\n * SPDX-License-Identifier: Apache-2.0\n */\n\n/* eslint-disable @typescript-eslint/no-explicit-any */\n\nimport { isPlainObject } from './lodash.merge';\n\nconst MAX_LEVEL = 20;\n\ninterface ObjectInto {\n  obj: any;\n  key: string;\n}\n\n/**\n * Merges objects together\n * @param args - objects / values to be merged\n */\nexport function merge(...args: any[]): any {\n  let result: any = args.shift();\n  const objects: WeakMap<any, ObjectInto[]> | undefined = new WeakMap<\n    any,\n    ObjectInto[]\n  >();\n  while (args.length > 0) {\n    result = mergeTwoObjects(result, args.shift(), 0, objects);\n  }\n\n  return result;\n}\n\nfunction takeValue(value: any): any {\n  if (isArray(value)) {\n    return value.slice();\n  }\n  return value;\n}\n\n/**\n * Merges two objects\n * @param one - first object\n * @param two - second object\n * @param level - current deep level\n * @param objects - objects holder that has been already referenced - to prevent\n * cyclic dependency\n */\nfunction mergeTwoObjects(\n  one: any,\n  two: any,\n  level = 0,\n  objects: WeakMap<any, ObjectInto[]>\n): any {\n  let result: any;\n  if (level > MAX_LEVEL) {\n    return undefined;\n  }\n  level++;\n  if (isPrimitive(one) || isPrimitive(two) || isFunction(two)) {\n    result = takeValue(two);\n  } else if (isArray(one)) {\n    result = one.slice();\n    if (isArray(two)) {\n      for (let i = 0, j = two.length; 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