@beenotung/tslib/form.js

utils library in Typescript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.jsonToFormData = jsonToFormData;
exports.postMultipartFormData = postMultipartFormData;
const response_1 = require("./response");
/**
 * @description also support files in { [field: string]: File[] | File }
 * One use-case is for FileFieldsInterceptor in nest-client
 */
function jsonToFormData(json, formData = new FormData()) {
    Object.keys(json).forEach(key => {
        const value = json[key];
        switch (typeof value) {
            case 'string':
            case 'number':
            case 'boolean':
                formData.append(key, value.toString());
                break;
            default:
                if (isFile(value)) {
                    formData.append(key, value);
                }
                else if (Array.isArray(value)) {
                    value.forEach(value => formData.append(key, value));
                }
                else if (value) {
                    let hasFile = false;
                    for (const [key, val] of Object.entries(value)) {
                        if (isFile(val)) {
                            hasFile = true;
                            formData.append(key, val);
                        }
                        else if (Array.isArray(val)) {
                            for (const v of val) {
                                if (isFile(v)) {
                                    hasFile = true;
                                    formData.append(key, v);
                                }
                            }
                        }
                    }
                    if (!hasFile) {
                        formData.append(key, JSON.stringify(value));
                    }
                }
        }
    });
    return formData;
}
function isFile(value) {
    return typeof File !== 'undefined' && value instanceof File;
}
function postMultipartFormData(url, json) {
    const formData = new FormData();
    jsonToFormData(json, formData);
    return fetch(url, { method: 'POST', body: formData }).then(res => (0, response_1.decodeResponse)(res).then((data) => {
        return {
            status: res.status,
            statusText: res.statusText,
            data: data,
        };
    }));
}