Function $readJSON

src/danfojs-base/io/browser/io.json.ts:50–80

(file: any, options?: JsonInputOptionsBrowser)

 * ```
 */
const $readJSON = async (file: any, options?: JsonInputOptionsBrowser) => {
    const { method, headers, frameConfig } = { method: "GET", headers: {}, frameConfig: {}, ...options }

    if (typeof file === "string" && file.startsWith("http")) {

        return new Promise(resolve => {
            fetch(file, { method, headers }).then(response => {
                if (response.status !== 200) {
                    throw new Error(`Failed to load ${file}`)
                }
                response.json().then(json => {
                    resolve(new DataFrame(json, frameConfig));
                });
            }).catch((err) => {
                throw new Error(err)
            })
        })

    } else if (file instanceof File) {
        return new Promise(resolve => {
            const reader = new FileReader();
            reader.readAsText(file);
            reader.onload = (event) => {
                const jsonObj = JSON.parse(event?.target?.result as string);
                resolve(new DataFrame(jsonObj, frameConfig));
            }
        })
    } else {
        throw new Error("ParamError: File not supported. file must be a url or an input File object")
    }
};


/**