@smartlyio/oats-mirage-adapter/dist/index.js

Mirage.js adapter for Oats

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.bind = bind;
const mirage = require("miragejs");
function guessContentType(contentTypeHeader, value) {
    if (contentTypeHeader?.includes('application/json')) {
        return 'application/json';
    }
    if (contentTypeHeader) {
        return contentTypeHeader;
    }
    if (value instanceof FormData) {
        return 'multipart/form-data';
    }
    return 'text/html';
}
async function guessValue(contentType, value) {
    if (value instanceof FormData) {
        return await handleFormData(value);
    }
    if (contentType.match(/application\/json/) && value) {
        return JSON.parse(value);
    }
    return value;
}
async function handleFormData(value) {
    const result = {};
    const keys = [];
    value.forEach((_, key) => keys.push(key));
    for (const key of keys) {
        const keyValue = value.get(key);
        if (keyValue instanceof Blob) {
            result[key] = await keyValue.arrayBuffer();
        }
        else if (typeof keyValue === 'string') {
            result[key] = keyValue;
        }
    }
    return result;
}
function adapter(mirageServer, requestContextCreator, opts) {
    // eslint-disable-next-line no-console, @typescript-eslint/no-empty-function
    const log = opts?.logging !== false ? console.log : () => { };
    return (path, op, method, handler) => {
        const miragePath = path.replace(/{([^}]+)}/g, (m, param) => ':' + param);
        const mirageHandler = mirageServer[method];
        mirageHandler(miragePath, async (schema, request) => {
            const headers = Object.keys(request.requestHeaders).reduce((lowerCaseHeaders, key) => {
                lowerCaseHeaders[key.toLowerCase()] = request.requestHeaders[key];
                return lowerCaseHeaders;
            }, {});
            const contentType = guessContentType(headers['content-type'], request.requestBody);
            const value = await guessValue(contentType, request.requestBody);
            const body = value != null ? { value, contentType } : undefined;
            const ctx = {
                path,
                method,
                servers: [],
                op,
                headers,
                params: request.params,
                query: request.queryParams,
                body,
                requestContext: requestContextCreator(schema, request)
            };
            log('oats-mirage-adapter request', ctx);
            try {
                const result = await handler(ctx);
                log('oats-mirage-adapter response', { result });
                return new mirage.Response(result.status, { ...result.headers, 'content-type': result.value.contentType }, result.value.contentType.match(/application\/json/)
                    ? JSON.stringify(result.value.value)
                    : result.value.value);
            }
            catch (error) {
                log('oats-mirage-adapter handler threw: ' + error.message, { error });
                return new mirage.Response(400, { 'content-type': 'text/plain' }, 'Error from handler: ' + error.message);
            }
        });
    };
}
/**
 * Bind provided handlers for the OpenAPI routes
 */
function bind(opts) {
    opts.handler(adapter(opts.server, opts.requestContextCreator || (() => ({})), {
        logging: opts.logging ?? true
    }))(opts.spec);
}
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