const getType = (obj: unknown): string => Object.prototype.toString.call(obj).slice(8, -1);

/** unsupported view */
export function unsupportedView(view: ArrayBufferView): never {
    const type = getType(view);
    throw new Error(`Unsupported array buffer view of type ${type}`);
}

/** unsupported type */
export function unsupportedType(value: unknown): never {
    if (value && typeof value == 'string') {
        throw new Error(`Unsupported type ${value}`);
    }
    const type = getType(value);
    throw new Error(`Unsupported type ${type}`);
}

/** 未结束的流 */
export class UnexpectedEofError extends Error {
    constructor() {
        super('Unexpected EOF');
        this.name = 'UnexpectedEofError';
    }
}