@angular/common
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Angular - commonly needed directives and services
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JavaScript
/**
* @license Angular v12.1.0
* (c) 2010-2021 Google LLC. https://angular.io/
* License: MIT
*/
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@angular/common'), require('@angular/core'), require('rxjs'), require('rxjs/operators')) :
typeof define === 'function' && define.amd ? define('@angular/common/http', ['exports', '@angular/common', '@angular/core', 'rxjs', 'rxjs/operators'], factory) :
(global = global || self, factory((global.ng = global.ng || {}, global.ng.common = global.ng.common || {}, global.ng.common.http = {}), global.ng.common, global.ng.core, global.rxjs, global.rxjs.operators));
}(this, (function (exports, common, core, rxjs, operators) { 'use strict';
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
/**
* Transforms an `HttpRequest` into a stream of `HttpEvent`s, one of which will likely be a
* `HttpResponse`.
*
* `HttpHandler` is injectable. When injected, the handler instance dispatches requests to the
* first interceptor in the chain, which dispatches to the second, etc, eventually reaching the
* `HttpBackend`.
*
* In an `HttpInterceptor`, the `HttpHandler` parameter is the next interceptor in the chain.
*
* @publicApi
*/
var HttpHandler = /** @class */ (function () {
function HttpHandler() {
}
return HttpHandler;
}());
/**
* A final `HttpHandler` which will dispatch the request via browser HTTP APIs to a backend.
*
* Interceptors sit between the `HttpClient` interface and the `HttpBackend`.
*
* When injected, `HttpBackend` dispatches requests directly to the backend, without going
* through the interceptor chain.
*
* @publicApi
*/
var HttpBackend = /** @class */ (function () {
function HttpBackend() {
}
return HttpBackend;
}());
/*! *****************************************************************************
Copyright (c) Microsoft Corporation.
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
***************************************************************************** */
/* global Reflect, Promise */
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({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b)
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d[p] = b[p]; };
return extendStatics(d, b);
};
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extendStatics(d, b);
function __() { this.constructor = d; }
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function __exportStar(m, o) {
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if (o && typeof o.length === "number")
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ar = ar.concat(__read(arguments[i]));
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s += arguments[i].length;
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function reject(value) { resume("throw", value); }
function settle(f, v) { if (f(v), q.shift(), q.length)
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;
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}
function __importDefault(mod) {
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function __classPrivateFieldGet(receiver, state, kind, f) {
if (kind === "a" && !f)
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}
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
/**
* Represents the header configuration options for an HTTP request.
* Instances are immutable. Modifying methods return a cloned
* instance with the change. The original object is never changed.
*
* @publicApi
*/
var HttpHeaders = /** @class */ (function () {
/** Constructs a new HTTP header object with the given values.*/
function HttpHeaders(headers) {
var _this = this;
/**
* Internal map of lowercased header names to the normalized
* form of the name (the form seen first).
*/
this.normalizedNames = new Map();
/**
* Queued updates to be materialized the next initialization.
*/
this.lazyUpdate = null;
if (!headers) {
this.headers = new Map();
}
else if (typeof headers === 'string') {
this.lazyInit = function () {
_this.headers = new Map();
headers.split('\n').forEach(function (line) {
var index = line.indexOf(':');
if (index > 0) {
var name = line.slice(0, index);
var key = name.toLowerCase();
var value = line.slice(index + 1).trim();
_this.maybeSetNormalizedName(name, key);
if (_this.headers.has(key)) {
_this.headers.get(key).push(value);
}
else {
_this.headers.set(key, [value]);
}
}
});
};
}
else {
this.lazyInit = function () {
_this.headers = new Map();
Object.keys(headers).forEach(function (name) {
var values = headers[name];
var key = name.toLowerCase();
if (typeof values === 'string') {
values = [values];
}
if (values.length > 0) {
_this.headers.set(key, values);
_this.maybeSetNormalizedName(name, key);
}
});
};
}
}
/**
* Checks for existence of a given header.
*
* @param name The header name to check for existence.
*
* @returns True if the header exists, false otherwise.
*/
HttpHeaders.prototype.has = function (name) {
this.init();
return this.headers.has(name.toLowerCase());
};
/**
* Retrieves the first value of a given header.
*
* @param name The header name.
*
* @returns The value string if the header exists, null otherwise
*/
HttpHeaders.prototype.get = function (name) {
this.init();
var values = this.headers.get(name.toLowerCase());
return values && values.length > 0 ? values[0] : null;
};
/**
* Retrieves the names of the headers.
*
* @returns A list of header names.
*/
HttpHeaders.prototype.keys = function () {
this.init();
return Array.from(this.normalizedNames.values());
};
/**
* Retrieves a list of values for a given header.
*
* @param name The header name from which to retrieve values.
*
* @returns A string of values if the header exists, null otherwise.
*/
HttpHeaders.prototype.getAll = function (name) {
this.init();
return this.headers.get(name.toLowerCase()) || null;
};
/**
* Appends a new value to the existing set of values for a header
* and returns them in a clone of the original instance.
*
* @param name The header name for which to append the values.
* @param value The value to append.
*
* @returns A clone of the HTTP headers object with the value appended to the given header.
*/
HttpHeaders.prototype.append = function (name, value) {
return this.clone({ name: name, value: value, op: 'a' });
};
/**
* Sets or modifies a value for a given header in a clone of the original instance.
* If the header already exists, its value is replaced with the given value
* in the returned object.
*
* @param name The header name.
* @param value The value or values to set or overide for the given header.
*
* @returns A clone of the HTTP headers object with the newly set header value.
*/
HttpHeaders.prototype.set = function (name, value) {
return this.clone({ name: name, value: value, op: 's' });
};
/**
* Deletes values for a given header in a clone of the original instance.
*
* @param name The header name.
* @param value The value or values to delete for the given header.
*
* @returns A clone of the HTTP headers object with the given value deleted.
*/
HttpHeaders.prototype.delete = function (name, value) {
return this.clone({ name: name, value: value, op: 'd' });
};
HttpHeaders.prototype.maybeSetNormalizedName = function (name, lcName) {
if (!this.normalizedNames.has(lcName)) {
this.normalizedNames.set(lcName, name);
}
};
HttpHeaders.prototype.init = function () {
var _this = this;
if (!!this.lazyInit) {
if (this.lazyInit instanceof HttpHeaders) {
this.copyFrom(this.lazyInit);
}
else {
this.lazyInit();
}
this.lazyInit = null;
if (!!this.lazyUpdate) {
this.lazyUpdate.forEach(function (update) { return _this.applyUpdate(update); });
this.lazyUpdate = null;
}
}
};
HttpHeaders.prototype.copyFrom = function (other) {
var _this = this;
other.init();
Array.from(other.headers.keys()).forEach(function (key) {
_this.headers.set(key, other.headers.get(key));
_this.normalizedNames.set(key, other.normalizedNames.get(key));
});
};
HttpHeaders.prototype.clone = function (update) {
var clone = new HttpHeaders();
clone.lazyInit =
(!!this.lazyInit && this.lazyInit instanceof HttpHeaders) ? this.lazyInit : this;
clone.lazyUpdate = (this.lazyUpdate || []).concat([update]);
return clone;
};
HttpHeaders.prototype.applyUpdate = function (update) {
var key = update.name.toLowerCase();
switch (update.op) {
case 'a':
case 's':
var value = update.value;
if (typeof value === 'string') {
value = [value];
}
if (value.length === 0) {
return;
}
this.maybeSetNormalizedName(update.name, key);
var base = (update.op === 'a' ? this.headers.get(key) : undefined) || [];
base.push.apply(base, __spreadArray([], __read(value)));
this.headers.set(key, base);
break;
case 'd':
var toDelete_1 = update.value;
if (!toDelete_1) {
this.headers.delete(key);
this.normalizedNames.delete(key);
}
else {
var existing = this.headers.get(key);
if (!existing) {
return;
}
existing = existing.filter(function (value) { return toDelete_1.indexOf(value) === -1; });
if (existing.length === 0) {
this.headers.delete(key);
this.normalizedNames.delete(key);
}
else {
this.headers.set(key, existing);
}
}
break;
}
};
/**
* @internal
*/
HttpHeaders.prototype.forEach = function (fn) {
var _this = this;
this.init();
Array.from(this.normalizedNames.keys())
.forEach(function (key) { return fn(_this.normalizedNames.get(key), _this.headers.get(key)); });
};
return HttpHeaders;
}());
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
/**
* Provides encoding and decoding of URL parameter and query-string values.
*
* Serializes and parses URL parameter keys and values to encode and decode them.
* If you pass URL query parameters without encoding,
* the query parameters can be misinterpreted at the receiving end.
*
*
* @publicApi
*/
var HttpUrlEncodingCodec = /** @class */ (function () {
function HttpUrlEncodingCodec() {
}
/**
* Encodes a key name for a URL parameter or query-string.
* @param key The key name.
* @returns The encoded key name.
*/
HttpUrlEncodingCodec.prototype.encodeKey = function (key) {
return standardEncoding(key);
};
/**
* Encodes the value of a URL parameter or query-string.
* @param value The value.
* @returns The encoded value.
*/
HttpUrlEncodingCodec.prototype.encodeValue = function (value) {
return standardEncoding(value);
};
/**
* Decodes an encoded URL parameter or query-string key.
* @param key The encoded key name.
* @returns The decoded key name.
*/
HttpUrlEncodingCodec.prototype.decodeKey = function (key) {
return decodeURIComponent(key);
};
/**
* Decodes an encoded URL parameter or query-string value.
* @param value The encoded value.
* @returns The decoded value.
*/
HttpUrlEncodingCodec.prototype.decodeValue = function (value) {
return decodeURIComponent(value);
};
return HttpUrlEncodingCodec;
}());
function paramParser(rawParams, codec) {
var map = new Map();
if (rawParams.length > 0) {
// The `window.location.search` can be used while creating an instance of the `HttpParams` class
// (e.g. `new HttpParams({ fromString: window.location.search })`). The `window.location.search`
// may start with the `?` char, so we strip it if it's present.
var params = rawParams.replace(/^\?/, '').split('&');
params.forEach(function (param) {
var eqIdx = param.indexOf('=');
var _a = __read(eqIdx == -1 ?
[codec.decodeKey(param), ''] :
[codec.decodeKey(param.slice(0, eqIdx)), codec.decodeValue(param.slice(eqIdx + 1))], 2), key = _a[0], val = _a[1];
var list = map.get(key) || [];
list.push(val);
map.set(key, list);
});
}
return map;
}
function standardEncoding(v) {
return encodeURIComponent(v)
.replace(/%40/gi, '@')
.replace(/%3A/gi, ':')
.replace(/%24/gi, '$')
.replace(/%2C/gi, ',')
.replace(/%3B/gi, ';')
.replace(/%2B/gi, '+')
.replace(/%3D/gi, '=')
.replace(/%3F/gi, '?')
.replace(/%2F/gi, '/');
}
function valueToString(value) {
return "" + value;
}
/**
* An HTTP request/response body that represents serialized parameters,
* per the MIME type `application/x-www-form-urlencoded`.
*
* This class is immutable; all mutation operations return a new instance.
*
* @publicApi
*/
var HttpParams = /** @class */ (function () {
function HttpParams(options) {
var _this = this;
if (options === void 0) { options = {}; }
this.updates = null;
this.cloneFrom = null;
this.encoder = options.encoder || new HttpUrlEncodingCodec();
if (!!options.fromString) {
if (!!options.fromObject) {
throw new Error("Cannot specify both fromString and fromObject.");
}
this.map = paramParser(options.fromString, this.encoder);
}
else if (!!options.fromObject) {
this.map = new Map();
Object.keys(options.fromObject).forEach(function (key) {
var value = options.fromObject[key];
_this.map.set(key, Array.isArray(value) ? value : [value]);
});
}
else {
this.map = null;
}
}
/**
* Reports whether the body includes one or more values for a given parameter.
* @param param The parameter name.
* @returns True if the parameter has one or more values,
* false if it has no value or is not present.
*/
HttpParams.prototype.has = function (param) {
this.init();
return this.map.has(param);
};
/**
* Retrieves the first value for a parameter.
* @param param The parameter name.
* @returns The first value of the given parameter,
* or `null` if the parameter is not present.
*/
HttpParams.prototype.get = function (param) {
this.init();
var res = this.map.get(param);
return !!res ? res[0] : null;
};
/**
* Retrieves all values for a parameter.
* @param param The parameter name.
* @returns All values in a string array,
* or `null` if the parameter not present.
*/
HttpParams.prototype.getAll = function (param) {
this.init();
return this.map.get(param) || null;
};
/**
* Retrieves all the parameters for this body.
* @returns The parameter names in a string array.
*/
HttpParams.prototype.keys = function () {
this.init();
return Array.from(this.map.keys());
};
/**
* Appends a new value to existing values for a parameter.
* @param param The parameter name.
* @param value The new value to add.
* @return A new body with the appended value.
*/
HttpParams.prototype.append = function (param, value) {
return this.clone({ param: param, value: value, op: 'a' });
};
/**
* Constructs a new body with appended values for the given parameter name.
* @param params parameters and values
* @return A new body with the new value.
*/
HttpParams.prototype.appendAll = function (params) {
var updates = [];
Object.keys(params).forEach(function (param) {
var value = params[param];
if (Array.isArray(value)) {
value.forEach(function (_value) {
updates.push({ param: param, value: _value, op: 'a' });
});
}
else {
updates.push({ param: param, value: value, op: 'a' });
}
});
return this.clone(updates);
};
/**
* Replaces the value for a parameter.
* @param param The parameter name.
* @param value The new value.
* @return A new body with the new value.
*/
HttpParams.prototype.set = function (param, value) {
return this.clone({ param: param, value: value, op: 's' });
};
/**
* Removes a given value or all values from a parameter.
* @param param The parameter name.
* @param value The value to remove, if provided.
* @return A new body with the given value removed, or with all values
* removed if no value is specified.
*/
HttpParams.prototype.delete = function (param, value) {
return this.clone({ param: param, value: value, op: 'd' });
};
/**
* Serializes the body to an encoded string, where key-value pairs (separated by `=`) are
* separated by `&`s.
*/
HttpParams.prototype.toString = function () {
var _this = this;
this.init();
return this.keys()
.map(function (key) {
var eKey = _this.encoder.encodeKey(key);
// `a: ['1']` produces `'a=1'`
// `b: []` produces `''`
// `c: ['1', '2']` produces `'c=1&c=2'`
return _this.map.get(key).map(function (value) { return eKey + '=' + _this.encoder.encodeValue(value); })
.join('&');
})
// filter out empty values because `b: []` produces `''`
// which results in `a=1&&c=1&c=2` instead of `a=1&c=1&c=2` if we don't
.filter(function (param) { return param !== ''; })
.join('&');
};
HttpParams.prototype.clone = function (update) {
var clone = new HttpParams({ encoder: this.encoder });
clone.cloneFrom = this.cloneFrom || this;
clone.updates = (this.updates || []).concat(update);
return clone;
};
HttpParams.prototype.init = function () {
var _this = this;
if (this.map === null) {
this.map = new Map();
}
if (this.cloneFrom !== null) {
this.cloneFrom.init();
this.cloneFrom.keys().forEach(function (key) { return _this.map.set(key, _this.cloneFrom.map.get(key)); });
this.updates.forEach(function (update) {
switch (update.op) {
case 'a':
case 's':
var base = (update.op === 'a' ? _this.map.get(update.param) : undefined) || [];
base.push(valueToString(update.value));
_this.map.set(update.param, base);
break;
case 'd':
if (update.value !== undefined) {
var base_1 = _this.map.get(update.param) || [];
var idx = base_1.indexOf(valueToString(update.value));
if (idx !== -1) {
base_1.splice(idx, 1);
}
if (base_1.length > 0) {
_this.map.set(update.param, base_1);
}
else {
_this.map.delete(update.param);
}
}
else {
_this.map.delete(update.param);
break;
}
}
});
this.cloneFrom = this.updates = null;
}
};
return HttpParams;
}());
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
/**
* A token used to manipulate and access values stored in `HttpContext`.
*
* @publicApi
*/
var HttpContextToken = /** @class */ (function () {
function HttpContextToken(defaultValue) {
this.defaultValue = defaultValue;
}
return HttpContextToken;
}());
/**
* Http context stores arbitrary user defined values and ensures type safety without
* actually knowing the types. It is backed by a `Map` and guarantees that keys do not clash.
*
* This context is mutable and is shared between cloned requests unless explicitly specified.
*
* @usageNotes
*
* ### Usage Example
*
* ```typescript
* // inside cache.interceptors.ts
* export const IS_CACHE_ENABLED = new HttpContextToken<boolean>(() => false);
*
* export class CacheInterceptor implements HttpInterceptor {
*
* intercept(req: HttpRequest<any>, delegate: HttpHandler): Observable<HttpEvent<any>> {
* if (req.context.get(IS_CACHE_ENABLED) === true) {
* return ...;
* }
* return delegate.handle(req);
* }
* }
*
* // inside a service
*
* this.httpClient.get('/api/weather', {
* context: new HttpContext().set(IS_CACHE_ENABLED, true)
* }).subscribe(...);
* ```
*
* @publicApi
*/
var HttpContext = /** @class */ (function () {
function HttpContext() {
this.map = new Map();
}
/**
* Store a value in the context. If a value is already present it will be overwritten.
*
* @param token The reference to an instance of `HttpContextToken`.
* @param value The value to store.
*
* @returns A reference to itself for easy chaining.
*/
HttpContext.prototype.set = function (token, value) {
this.map.set(token, value);
return this;
};
/**
* Retrieve the value associated with the given token.
*
* @param token The reference to an instance of `HttpContextToken`.
*
* @returns The stored value or default if one is defined.
*/
HttpContext.prototype.get = function (token) {
if (!this.map.has(token)) {
this.map.set(token, token.defaultValue());
}
return this.map.get(token);
};
/**
* Delete the value associated with the given token.
*
* @param token The reference to an instance of `HttpContextToken`.
*
* @returns A reference to itself for easy chaining.
*/
HttpContext.prototype.delete = function (token) {
this.map.delete(token);
return this;
};
/**
* @returns a list of tokens currently stored in the context.
*/
HttpContext.prototype.keys = function () {
return this.map.keys();
};
return HttpContext;
}());
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
/**
* Determine whether the given HTTP method may include a body.
*/
function mightHaveBody(method) {
switch (method) {
case 'DELETE':
case 'GET':
case 'HEAD':
case 'OPTIONS':
case 'JSONP':
return false;
default:
return true;
}
}
/**
* Safely assert whether the given value is an ArrayBuffer.
*
* In some execution environments ArrayBuffer is not defined.
*/
function isArrayBuffer(value) {
return typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer;
}
/**
* Safely assert whether the given value is a Blob.
*
* In some execution environments Blob is not defined.
*/
function isBlob(value) {
return typeof Blob !== 'undefined' && value instanceof Blob;
}
/**
* Safely assert whether the given value is a FormData instance.
*
* In some execution environments FormData is not defined.
*/
function isFormData(value) {
return typeof FormData !== 'undefined' && value instanceof FormData;
}
/**
* Safely assert whether the given value is a URLSearchParams instance.
*
* In some execution environments URLSearchParams is not defined.
*/
function isUrlSearchParams(value) {
return typeof URLSearchParams !== 'undefined' && value instanceof URLSearchParams;
}
/**
* An outgoing HTTP request with an optional typed body.
*
* `HttpRequest` represents an outgoing request, including URL, method,
* headers, body, and other request configuration options. Instances should be
* assumed to be immutable. To modify a `HttpRequest`, the `clone`
* method should be used.
*
* @publicApi
*/
var HttpRequest = /** @class */ (function () {
function HttpRequest(method, url, third, fourth) {
this.url = url;
/**
* The request body, or `null` if one isn't set.
*
* Bodies are not enforced to be immutable, as they can include a reference to any
* user-defined data type. However, interceptors should take care to preserve
* idempotence by treating them as such.
*/
this.body = null;
/**
* Whether this request should be made in a way that exposes progress events.
*
* Progress events are expensive (change detection runs on each event) and so
* they should only be requested if the consumer intends to monitor them.
*/
this.reportProgress = false;
/**
* Whether this request should be sent with outgoing credentials (cookies).
*/
this.withCredentials = false;
/**
* The expected response type of the server.
*
* This is used to parse the response appropriately before returning it to
* the requestee.
*/
this.responseType = 'json';
this.method = method.toUpperCase();
// Next, need to figure out which argument holds the HttpRequestInit
// options, if any.
var options;
// Check whether a body argument is expected. The only valid way to omit
// the body argument is to use a known no-body method like GET.
if (mightHaveBody(this.method) || !!fourth) {
// Body is the third argument, options are the fourth.
this.body = (third !== undefined) ? third : null;
options = fourth;
}
else {
// No body required, options are the third argument. The body stays null.
options = third;
}
// If options have been passed, interpret them.
if (options) {
// Normalize reportProgress and withCredentials.
this.reportProgress = !!options.reportProgress;
this.withCredentials = !!options.withCredentials;
// Override default response type of 'json' if one is provided.
if (!!options.responseType) {
this.responseType = options.responseType;
}
// Override headers if they're provided.
if (!!options.headers) {
this.headers = options.headers;
}
if (!!options.context) {
this.context = options.context;
}
if (!!options.params) {
this.params = options.params;
}
}
// If no headers have been passed in, construct a new HttpHeaders instance.
if (!this.headers) {
this.headers = new HttpHeaders();
}
// If no context have been passed in, construct a new HttpContext instance.
if (!this.context) {
this.context = new HttpContext();
}
// If no parameters have been passed in, construct a new HttpUrlEncodedParams instance.
if (!this.params) {
this.params = new HttpParams();
this.urlWithParams = url;
}
else {
// Encode the parameters to a string in preparation for inclusion in the URL.
var params = this.params.toString();
if (params.length === 0) {
// No parameters, the visible URL is just the URL given at creation time.
this.urlWithParams = url;
}
else {
// Does the URL already have query parameters? Look for '?'.
var qIdx = url.indexOf('?');
// There are 3 cases to handle:
// 1) No existing parameters -> append '?' followed by params.
// 2) '?' exists and is followed by existing query string ->
// append '&' followed by params.
// 3) '?' exists at the end of the url -> append params directly.
// This basically amounts to determining the character, if any, with
// which to join the URL and parameters.
var sep = qIdx === -1 ? '?' : (qIdx < url.length - 1 ? '&' : '');
this.urlWithParams = url + sep + params;
}
}
}
/**
* Transform the free-form body into a serialized format suitable for
* transmission to the server.
*/
HttpRequest.prototype.serializeBody = function () {
// If no body is present, no need to serialize it.
if (this.body === null) {
return null;
}
// Check whether the body is already in a serialized form. If so,
// it can just be returned directly.
if (isArrayBuffer(this.body) || isBlob(this.body) || isFormData(this.body) ||
isUrlSearchParams(this.body) || typeof this.body === 'string') {
return this.body;
}
// Check whether the body is an instance of HttpUrlEncodedParams.
if (this.body instanceof HttpParams) {
return this.body.toString();
}
// Check whether the body is an object or array, and serialize with JSON if so.
if (typeof this.body === 'object' || typeof this.body === 'boolean' ||
Array.isArray(this.body)) {
return JSON.stringify(this.body);
}
// Fall back on toString() for everything else.
return this.body.toString();
};
/**
* Examine the body and attempt to infer an appropriate MIME type
* for it.
*
* If no such type can be inferred, this method will return `null`.
*/
HttpRequest.prototype.detectContentTypeHeader = function () {
// An empty body has no content type.
if (this.body === null) {
return null;
}
// FormData bodies rely on the browser's content type assignment.
if (isFormData(this.body)) {
return null;
}
// Blobs usually have their own content type. If it doesn't, then
// no type can be inferred.
if (isBlob(this.body)) {
return this.body.type || null;
}
// Array buffers have unknown contents and thus no type can be inferred.
if (isArrayBuffer(this.body)) {
return null;
}
// Technically, strings could be a form of JSON data, but it's safe enough
// to assume they're plain strings.
if (typeof this.body === 'string') {
return 'text/plain';
}
// `HttpUrlEncodedParams` has its own content-type.
if (this.body instanceof HttpParams) {
return 'application/x-www-form-urlencoded;charset=UTF-8';
}
// Arrays, objects, boolean and numbers will be encoded as JSON.
if (typeof this.body === 'object' || typeof this.body === 'number' ||
typeof this.body === 'boolean') {
return 'application/json';
}
//