[backend] fix: 修复异常处理和类型转换问题

frontend/node_modules/@rc-component/mini-decimal/es/BigIntDecimal.d.ts

@@ -0,0 +1,34 @@
+import type { DecimalClass, ValueType } from './interface';
+export default class BigIntDecimal implements DecimalClass {
+    origin: string;
+    negative: boolean;
+    integer: bigint;
+    decimal: bigint;
+    /** BigInt will convert `0009` to `9`. We need record the len of decimal */
+    decimalLen: number;
+    empty: boolean;
+    nan: boolean;
+    constructor(value: string | number);
+    private getMark;
+    private getIntegerStr;
+    /**
+     * @private get decimal string
+     */
+    getDecimalStr(): string;
+    /**
+     * @private Align BigIntDecimal with same decimal length. e.g. 12.3 + 5 = 1230000
+     * This is used for add function only.
+     */
+    alignDecimal(decimalLength: number): bigint;
+    negate(): BigIntDecimal;
+    private cal;
+    add(value: ValueType): BigIntDecimal;
+    multi(value: ValueType): BigIntDecimal;
+    isEmpty(): boolean;
+    isNaN(): boolean;
+    isInvalidate(): boolean;
+    equals(target: DecimalClass): boolean;
+    lessEquals(target: DecimalClass): boolean;
+    toNumber(): number;
+    toString(safe?: boolean): string;
+}