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DefinitelyTyped/types/fetch-mock/index.d.ts
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// Type definitions for fetch-mock 6.0
// Project: https://github.com/wheresrhys/fetch-mock
// Definitions by: Alexey Svetliakov <https://github.com/asvetliakov>
// Tamir Duberstein <https://github.com/tamird>
// Risto Keravuori <https://github.com/merrywhether>
// Chris Sinclair <https://github.com/chrissinclair>
// Matt Tennison <https://github.com/matttennison>
// Quentin Bouygues <https://github.com/quentinbouygues>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
// TypeScript Version: 2.2
declare namespace fetchMock {
type MockRequest = Request | RequestInit;
/**
* Mock matcher function
*/
type MockMatcherFunction = (url: string, opts: MockRequest) => boolean;
/**
* Mock matcher. Can be one of following:
* string: Either
* * an exact url to match e.g. 'http://www.site.com/page.html'
* * if the string begins with a `^`, the string following the `^` must
* begin the url e.g. '^http://www.site.com' would match
* 'http://www.site.com' or 'http://www.site.com/page.html'
* * '*' to match any url
* RegExp: A regular expression to test the url against
* Function(url, opts): A function (returning a Boolean) that is passed the
* url and opts fetch() is called with (or, if fetch() was called with one,
* the Request instance)
*/
type MockMatcher = string | RegExp | MockMatcherFunction;
/**
* Mock response object
*/
interface MockResponseObject {
/**
* Set the response body
*/
body?: string | {};
/**
* Set the response status
* @default 200
*/
status?: number;
/**
* Set the response headers.
*/
headers?: { [key: string]: string };
/**
* If this property is present then a Promise rejected with the value
* of throws is returned
*/
throws?: boolean;
/**
* This property determines whether or not the request body should be
* JSON.stringified before being sent
* @default true
*/
sendAsJson?: boolean;
/**
* Setting this property to true will automatically add the
* content-length header
* @default true
*/
includeContentLength?: boolean;
/**
* The URL the response should be from (to imitate followed redirects
* - will set redirected: true on the response)
*/
redirectUrl?: string;
}
/**
* Response: A Response instance - will be used unaltered
* number: Creates a response with this status
* string: Creates a 200 response with the string as the response body
* object: As long as the object is not a MockResponseObject it is
* converted into a json string and returned as the body of a 200 response
* If MockResponseObject was given then it's used to configure response
* Function(url, opts): A function that is passed the url and opts fetch()
* is called with and that returns any of the responses listed above
*/
type MockResponse = Response | Promise<Response>
| number | Promise<number>
| string | Promise<string>
| {} | Promise<{}>
| MockResponseObject | Promise<MockResponseObject>;
/**
* Mock response function
*/
type MockResponseFunction = (url: string, opts: MockRequest) => MockResponse;
/**
* Mock options object
*/
interface MockOptions {
/**
* A unique string naming the route. Used to subsequently retrieve
* references to the calls, grouped by name.
* @default matcher.toString()
*
* Note: If a non-unique name is provided no error will be thrown
* (because names are optional, auto-generated ones may legitimately
* clash)
*/
name?: string;
/**
* http method to match
*/
method?: string;
/**
* key/value map of headers to match
*/
headers?: { [key: string]: string };
/**
* key/value map of query strings to match, in any order
*/
query?: { [key: string]: string };
/**
* as specified above
*/
matcher?: MockMatcher;
/**
* This option allows for existing routes in a mock to be overwritten.
* Its also possible to define multiple routes with the same matcher.
* Default behaviour is to error
*/
overwriteRoutes?: boolean;
/**
* as specified above
*/
response?: MockResponse | MockResponseFunction;
/**
* integer, n, limiting the number of times the matcher can be used.
* If the route has already been called n times the route will be
* ignored and the call to fetch() will fall through to be handled by
* any other routes defined (which may eventually result in an error
* if nothing matches it).
*/
repeat?: number;
}
type MockCall = [string, MockRequest];
interface MatchedRoutes {
matched: MockCall[];
unmatched: MockCall[];
}
interface MockOptionsMethodGet extends MockOptions {
method: 'GET';
}
interface MockOptionsMethodPost extends MockOptions {
method: 'POST';
}
interface MockOptionsMethodPut extends MockOptions {
method: 'PUT';
}
interface MockOptionsMethodDelete extends MockOptions {
method: 'DELETE';
}
interface MockOptionsMethodHead extends MockOptions {
method: 'HEAD';
}
interface FetchMockStatic {
/**
* Replaces fetch() with a stub which records its calls, grouped by
* route, and optionally returns a mocked Response object or passes the
* call through to fetch(). Calls to .mock() can be chained.
* @param matcher Condition for selecting which requests to mock
* @param response Configures the http response returned by the mock
* @param [options] Additional properties defining the route to mock
*/
mock(matcher: MockMatcher, response: MockResponse | MockResponseFunction, options?: MockOptions): this;
/**
* Replaces fetch() with a stub which records its calls, grouped by
* route, and optionally returns a mocked Response object or passes the
* call through to fetch(). Calls to .mock() can be chained.
* @param options The route to mock
*/
mock(options: MockOptions): this;
/**
* Replaces fetch() with a stub which records its calls, grouped by
* route, and optionally returns a mocked Response object or passes the
* call through to fetch(). Shorthand for mock() limited to being
* called one time only. Calls to .once() can be chained.
* @param matcher Condition for selecting which requests to mock
* @param response Configures the http response returned by the mock
* @param [options] Optional additional properties defining the route to mock
*/
once(matcher: MockMatcher, response: MockResponse | MockResponseFunction, options?: MockOptions): this;
/**
* Replaces fetch() with a stub which records its calls, grouped by
* route, and optionally returns a mocked Response object or passes the
* call through to fetch(). Shorthand for mock() restricted to the GET
* method. Calls to .get() can be chained.
* @param matcher Condition for selecting which requests to mock
* @param response Configures the http response returned by the mock
* @param [options] Additional properties defining the route to mock
*/
get(matcher: MockMatcher, reponse: MockResponse | MockResponseFunction, options?: MockOptionsMethodGet): this;
/**
* Replaces fetch() with a stub which records its calls, grouped by
* route, and optionally returns a mocked Response object or passes the
* call through to fetch(). Shorthand for mock() restricted to the GET
* method and limited to being called one time only. Calls to .getOnce()
* can be chained.
* @param matcher Condition for selecting which requests to mock
* @param response Configures the http response returned by the mock
* @param [options] Additional properties defining the route to mock
*/
getOnce(matcher: MockMatcher, reponse: MockResponse | MockResponseFunction, options?: MockOptionsMethodGet): this;
/**
* Replaces fetch() with a stub which records its calls, grouped by
* route, and optionally returns a mocked Response object or passes the
* call through to fetch(). Shorthand for mock() restricted to the POST
* method. Calls to .post() can be chained.
* @param matcher Condition for selecting which requests to mock
* @param response Configures the http response returned by the mock
* @param [options] Additional properties defining the route to mock
*/
post(matcher: MockMatcher, reponse: MockResponse | MockResponseFunction, options?: MockOptionsMethodPost): this;
/**
* Replaces fetch() with a stub which records its calls, grouped by
* route, and optionally returns a mocked Response object or passes the
* call through to fetch(). Shorthand for mock() restricted to the POST
* method and limited to being called one time only. Calls to .postOnce()
* can be chained.
* @param matcher Condition for selecting which requests to mock
* @param response Configures the http response returned by the mock
* @param [options] Additional properties defining the route to mock
*/
postOnce(matcher: MockMatcher, reponse: MockResponse | MockResponseFunction, options?: MockOptionsMethodPost): this;
/**
* Replaces fetch() with a stub which records its calls, grouped by
* route, and optionally returns a mocked Response object or passes the
* call through to fetch(). Shorthand for mock() restricted to the PUT
* method. Calls to .put() can be chained.
* @param matcher Condition for selecting which requests to mock
* @param response Configures the http response returned by the mock
* @param [options] Additional properties defining the route to mock
*/
put(matcher: MockMatcher, reponse: MockResponse | MockResponseFunction, options?: MockOptionsMethodPut): this;
/**
* Replaces fetch() with a stub which records its calls, grouped by
* route, and optionally returns a mocked Response object or passes the
* call through to fetch(). Shorthand for mock() restricted to the PUT
* method and limited to being called one time only. Calls to .putOnce()
* can be chained.
* @param matcher Condition for selecting which requests to mock
* @param response Configures the http response returned by the mock
* @param [options] Additional properties defining the route to mock
*/
putOnce(matcher: MockMatcher, reponse: MockResponse | MockResponseFunction, options?: MockOptionsMethodPut): this;
/**
* Replaces fetch() with a stub which records its calls, grouped by
* route, and optionally returns a mocked Response object or passes the
* call through to fetch(). Shorthand for mock() restricted to the
* DELETE method. Calls to .delete() can be chained.
* @param matcher Condition for selecting which requests to mock
* @param response Configures the http response returned by the mock
* @param [options] Additional properties defining the route to mock
*/
delete(matcher: MockMatcher, reponse: MockResponse | MockResponseFunction, options?: MockOptionsMethodDelete): this;
/**
* Replaces fetch() with a stub which records its calls, grouped by
* route, and optionally returns a mocked Response object or passes the
* call through to fetch(). Shorthand for mock() restricted to the
* DELETE method and limited to being called one time only. Calls to
* .deleteOnce() can be chained.
* @param matcher Condition for selecting which requests to mock
* @param response Configures the http response returned by the mock
* @param [options] Additional properties defining the route to mock
*/
deleteOnce(matcher: MockMatcher, reponse: MockResponse | MockResponseFunction, options?: MockOptionsMethodDelete): this;
/**
* Replaces fetch() with a stub which records its calls, grouped by
* route, and optionally returns a mocked Response object or passes the
* call through to fetch(). Shorthand for mock() restricted to the HEAD
* method. Calls to .head() can be chained.
* @param matcher Condition for selecting which requests to mock
* @param response Configures the http response returned by the mock
* @param [options] Additional properties defining the route to mock
*/
head(matcher: MockMatcher, reponse: MockResponse | MockResponseFunction, options?: MockOptionsMethodHead): this;
/**
* Replaces fetch() with a stub which records its calls, grouped by
* route, and optionally returns a mocked Response object or passes the
* call through to fetch(). Shorthand for mock() restricted to the HEAD
* method and limited to being called one time only. Calls to .headOnce()
* can be chained.
* @param matcher Condition for selecting which requests to mock
* @param response Configures the http response returned by the mock
* @param [options] Additional properties defining the route to mock
*/
headOnce(matcher: MockMatcher, reponse: MockResponse | MockResponseFunction, options?: MockOptionsMethodHead): this;
/**
* Replaces fetch() with a stub which records its calls, grouped by
* route, and optionally returns a mocked Response object or passes the
* call through to fetch(). Shorthand for mock() restricted to the PATCH
* method. Calls to .patch() can be chained.
* @param matcher Condition for selecting which requests to mock
* @param response Configures the http response returned by the mock
* @param [options] Additional properties defining the route to mock
*/
patch(matcher: MockMatcher, reponse: MockResponse | MockResponseFunction, options?: MockOptionsMethodHead): this;
/**
* Replaces fetch() with a stub which records its calls, grouped by
* route, and optionally returns a mocked Response object or passes the
* call through to fetch(). Shorthand for mock() restricted to the PATCH
* method and limited to being called one time only. Calls to .patchOnce()
* can be chained.
* @param matcher Condition for selecting which requests to mock
* @param response Configures the http response returned by the mock
* @param [options] Additional properties defining the route to mock
*/
patchOnce(matcher: MockMatcher, reponse: MockResponse | MockResponseFunction, options?: MockOptionsMethodHead): this;
/**
* Chainable method that defines how to respond to calls to fetch that
* don't match any of the defined mocks. It accepts the same types of
* response as a normal call to .mock(matcher, response). It can also
* take an arbitrary function to completely customise behaviour of
* unmatched calls. If .catch() is called without any parameters then
* every unmatched call will receive a 200 response.
* @param [response] Configures the http response returned by the mock
*/
catch(response?: MockResponse | MockResponseFunction): this;
/**
* Chainable method that records the call history of unmatched calls,
* but instead of responding with a stubbed response, the request is
* passed through to native fetch() and is allowed to communicate
* over the network. Similar to catch().
*/
spy(response?: MockResponse | MockResponseFunction): this;
/**
* Chainable method that restores fetch() to its unstubbed state and
* clears all data recorded for its calls.
*/
restore(): this;
/**
* Chainable method that clears all data recorded for fetch()'s calls
*/
reset(): this;
/**
* Returns a promise that resolves once all fetches handled by fetch-mock
* have resolved.
*/
flush(): Promise<MockResponse[]>;
/**
* Returns all calls to fetch, grouped by whether fetch-mock matched
* them or not.
*/
calls(): MatchedRoutes;
/**
* Returns all calls to fetch matching matcherName.
*/
calls(matcherName?: string): MockCall[];
/**
* Returns a Boolean indicating whether fetch was called and a route
* was matched (or a specific route if matcherName is passed).
* @param [matcherName] either the name of a route or equal to
* matcher.toString() for any unnamed route
*/
called(matcherName?: string): boolean;
/**
* Returns a Boolean indicating whether fetch was called the expected
* number of times (or at least once if the route defines no expectation
* is set) for every route (or for a specific route if matcherName is
* passed).
* @param [matcherName] either the name of a route or equal to
* matcher.toString() for any unnamed route
*/
done(matcherName?: string): boolean;
/**
* Returns the arguments for the last matched call to fetch (or the
* last call to specific route is matcherName is passed).
* @param [matcherName] either the name of a route or equal to
* matcher.toString() for any unnamed route
*/
lastCall(matcherName?: string): MockCall;
/**
* Returns the url for the last matched call to fetch (or the last
* call to specific route is matcherName is passed).
* @param [matcherName] either the name of a route or equal to
* matcher.toString() for any unnamed route
*/
lastUrl(matcherName?: string): string;
/**
* Returns the options for the last matched call to fetch (or the
* last call to a specific route is matcherName is passed).
* @param [matcherName] either the name of a route or equal to
* matcher.toString() for any unnamed route
*/
lastOptions(matcherName?: string): MockRequest;
/**
* Set some global config options, which include
* sendAsJson [default `true`] - by default fetchMock will
* convert objects to JSON before sending. This is overrideable
* for each call but for some scenarios, e.g. when dealing with a
* lot of array buffers, it can be useful to default to `false`
*/
configure(opts: {}): void;
}
}
declare var fetchMock: fetchMock.FetchMockStatic;
export = fetchMock;