Function setPathInternal

frontend/util/ijson.ts:145–213

(obj: any, path: PathType, value: any, opts: SetPathOpts)

}

function setPathInternal(obj: any, path: PathType, value: any, opts: SetPathOpts): any {
    if (path.length == 0) {
        if (opts.combinefn != null) {
            return opts.combinefn(obj, value, opts);
        }
        return value;
    }
    const pathPart = path[0];
    if (typeof pathPart === "string") {
        if (obj == null) {
            if (opts.remove) {
                return null;
            }
            obj = {};
        }
        if (!isObject(obj)) {
            if (opts.force) {
                obj = {};
            } else {
                throw new Error("Cannot set path on non-object: " + obj);
            }
        }
        if (opts.remove && path.length == 1) {
            delete obj[pathPart];
            if (isEmpty(obj)) {
                return null;
            }
            return obj;
        }
        const newVal = setPathInternal(obj[pathPart], path.slice(1), value, opts);
        if (opts.remove && newVal == null) {
            delete obj[pathPart];
            if (isEmpty(obj)) {
                return null;
            }
            return obj;
        }
        obj[pathPart] = newVal;
        return obj;
    } else if (typeof pathPart === "number") {
        if (pathPart < 0 || !Number.isInteger(pathPart)) {
            throw new Error("Invalid path part: " + pathPart);
        }
        if (obj == null) {
            if (opts.remove) {
                return null;
            }
            obj = [];
        }
        if (!isArray(obj)) {
            if (opts.force) {
                obj = [];
            } else {
                throw new Error("Cannot set path on non-array: " + obj);
            }
        }
        if (opts.remove && path.length == 1) {
            return removeFromArr(obj, pathPart);