模糊指令后修剪:angular2修剪指令,即使只有一个字母也会抛出错误

问题在库中,因此更改代码 input-trim.directive.ts

private updateValue(event: string, value: string): void {
        const currentValue = this.trim !== '' && event !== this.trim ? value : value.trim();
        const previousValue = this._value;
        let trimmedPreviousValue = '';
        if (Boolean(previousValue)) {
            trimmedPreviousValue = previousValue.trim();
        }

        this.writeValue(currentValue);
        const trimmedValue = this._value.trim();
        if (trimmedValue !== previousValue && (trimmedValue !== '' || trimmedPreviousValue !== '')) {
            this.onChange(this._value);
        }
    }