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153 lines
4.2 KiB
Plaintext
153 lines
4.2 KiB
Plaintext
/*
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* Copyright The OpenTelemetry Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/* eslint-disable @typescript-eslint/no-explicit-any */
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/**
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* based on lodash in order to support esm builds without esModuleInterop.
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* lodash is using MIT License.
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**/
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const objectTag = '[object Object]';
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const nullTag = '[object Null]';
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const undefinedTag = '[object Undefined]';
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const funcProto = Function.prototype;
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const funcToString = funcProto.toString;
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const objectCtorString = funcToString.call(Object);
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const getPrototypeOf = Object.getPrototypeOf;
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const objectProto = Object.prototype;
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const hasOwnProperty = objectProto.hasOwnProperty;
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const symToStringTag = Symbol ? Symbol.toStringTag : undefined;
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const nativeObjectToString = objectProto.toString;
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/**
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* Checks if `value` is a plain object, that is, an object created by the
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* `Object` constructor or one with a `[[Prototype]]` of `null`.
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*
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* @static
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* @memberOf _
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* @since 0.8.0
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* @category Lang
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* @param {*} value The value to check.
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* @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
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* @example
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*
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* function Foo() {
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* this.a = 1;
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* }
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*
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* _.isPlainObject(new Foo);
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* // => false
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*
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* _.isPlainObject([1, 2, 3]);
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* // => false
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*
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* _.isPlainObject({ 'x': 0, 'y': 0 });
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* // => true
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*
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* _.isPlainObject(Object.create(null));
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* // => true
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*/
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export function isPlainObject(value) {
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if (!isObjectLike(value) || baseGetTag(value) !== objectTag) {
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return false;
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}
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const proto = getPrototypeOf(value);
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if (proto === null) {
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return true;
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}
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const Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;
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return (typeof Ctor == 'function' &&
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Ctor instanceof Ctor &&
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funcToString.call(Ctor) === objectCtorString);
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}
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/**
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* Checks if `value` is object-like. A value is object-like if it's not `null`
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* and has a `typeof` result of "object".
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*
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* @static
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* @memberOf _
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* @since 4.0.0
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* @category Lang
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* @param {*} value The value to check.
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* @returns {boolean} Returns `true` if `value` is object-like, else `false`.
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* @example
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*
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* _.isObjectLike({});
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* // => true
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*
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* _.isObjectLike([1, 2, 3]);
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* // => true
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*
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* _.isObjectLike(_.noop);
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* // => false
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*
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* _.isObjectLike(null);
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* // => false
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*/
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function isObjectLike(value) {
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return value != null && typeof value == 'object';
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}
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/**
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* The base implementation of `getTag` without fallbacks for buggy environments.
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*
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* @private
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* @param {*} value The value to query.
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* @returns {string} Returns the `toStringTag`.
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*/
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function baseGetTag(value) {
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if (value == null) {
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return value === undefined ? undefinedTag : nullTag;
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}
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return symToStringTag && symToStringTag in Object(value)
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? getRawTag(value)
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: objectToString(value);
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}
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/**
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* A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.
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*
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* @private
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* @param {*} value The value to query.
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* @returns {string} Returns the raw `toStringTag`.
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*/
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function getRawTag(value) {
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const isOwn = hasOwnProperty.call(value, symToStringTag), tag = value[symToStringTag];
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let unmasked = false;
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try {
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value[symToStringTag] = undefined;
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unmasked = true;
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}
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catch {
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// silence
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}
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const result = nativeObjectToString.call(value);
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if (unmasked) {
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if (isOwn) {
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value[symToStringTag] = tag;
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}
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else {
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delete value[symToStringTag];
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}
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}
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return result;
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}
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/**
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* Converts `value` to a string using `Object.prototype.toString`.
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*
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* @private
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* @param {*} value The value to convert.
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* @returns {string} Returns the converted string.
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*/
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function objectToString(value) {
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return nativeObjectToString.call(value);
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}
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//# sourceMappingURL=lodash.merge.js.map |