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type safe fetch wrapper
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| export enum Methods { | |
| post = 'POST', | |
| get = 'GET', | |
| put = 'PUT', | |
| patch = 'PATCH', | |
| delete = 'DELETE', | |
| head = 'HEAD', | |
| options = 'OPTIONS', | |
| } | |
| const bodyContentMethods = ['post', 'put', 'patch']; | |
| interface RequestBasic { | |
| method: Methods; | |
| url: string; | |
| path?: string; | |
| headers: Headers; | |
| } | |
| interface RequestWithoutBody extends RequestBasic { | |
| body?: never; | |
| } | |
| interface RequestWithBody<T> extends RequestBasic { | |
| body: T; | |
| } | |
| export type RequestPayload<T = void> = RequestWithoutBody | RequestWithBody<T>; | |
| interface FetchRequestOptions { | |
| headers: Headers; | |
| method: string; | |
| body?: string; | |
| } | |
| export async function request<T = void, U = void>( | |
| req: RequestPayload<T>, | |
| ): Promise<U> { | |
| const options: FetchRequestOptions = { | |
| headers: req.headers, | |
| method: req.method.toUpperCase(), | |
| }; | |
| const fullUrl = `${req.url}${req.path ? req.path : ''}`; | |
| const bodyMethod = bodyContentMethods.includes(req.method.toLowerCase()); | |
| if (bodyMethod && req.body) { | |
| options.headers.append('Content-Type', 'Application/json'); | |
| options.body = JSON.stringify(req.body); | |
| } | |
| if (bodyMethod && !req.body) { | |
| throw new Error(`Request using ${req.method} method must include a body`); | |
| } | |
| return fetch(fullUrl, options) | |
| .then((res) => { | |
| if (!res.ok) { | |
| throw new Error(`${res.status} | ${res.statusText}`); | |
| } | |
| return res.json() as Promise<{ data: U }>; | |
| }) | |
| .then((data) => { | |
| return data.data; | |
| }) | |
| .catch((err) => { | |
| throw new Error(err.message); | |
| }); | |
| } |
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