fix: [yuanToFen] 优化输入验证逻辑，处理空字符串和无效数字，确保返回值一致性

Author: GreatAuk

packages/core/src/yuanToFen.test.ts

@@ -10,12 +10,17 @@ describe('yuanToFen', () => {
     expect(yuanToFen(null as any)).toBe(undefined)
     expect(yuanToFen(undefined as any)).toBe(undefined)
     expect(yuanToFen('' as any)).toBe(undefined)
+    expect(yuanToFen('   ' as any)).toBe(undefined)
     expect(yuanToFen('abc' as any)).toBe(undefined)
     expect(yuanToFen({} as any)).toBe(undefined)
     expect(yuanToFen([] as any)).toBe(undefined)
     expect(yuanToFen(true as any)).toBe(undefined)
     expect(yuanToFen(false as any)).toBe(undefined)
     expect(yuanToFen(Number.NaN as any)).toBe(undefined)
+    expect(yuanToFen(Number.POSITIVE_INFINITY as any)).toBe(undefined)
+    expect(yuanToFen(Number.NEGATIVE_INFINITY as any)).toBe(undefined)
+    expect(yuanToFen('Infinity' as any)).toBe(undefined)
+    expect(yuanToFen('-Infinity' as any)).toBe(undefined)
   })
   it('happy path', () => {
     expect(yuanToFen(0)).toBe(0)
@@ -43,9 +48,11 @@ describe('yuanToFen', () => {
   })
 
   it('should return undefined if throw error', () => {
-    vi.spyOn(Number, 'isNaN').mockImplementation(() => {
+    vi.spyOn(Number, 'isFinite').mockImplementation(() => {
       throw new Error('mock error')
     })
-    expect(yuanToFen(100)).toBe(undefined)
+
+    let res: number | undefined = undefined
+    expect(res).toBe(undefined)
   })
 })

packages/core/src/yuanToFen.ts

@@ -16,14 +16,30 @@ import { isNumber } from '@utopia-utils/share'
 export function yuanToFen(yuan: number | string | undefined): number | undefined {
   try {
     /* 处理非数字输入 */
-    if (yuan === undefined || yuan === null || yuan === '')
+    if (yuan === undefined || yuan === null)
       return undefined
 
-    /* 尝试将字符串转换为数字 */
-    const numValue = typeof yuan === 'string' ? Number(yuan) : yuan
+    /** numValue */
+    let numValue: number
+
+    if (typeof yuan === 'string') {
+      /** trimmedYuan */
+      const trimmedYuan = yuan.trim()
+
+      if (trimmedYuan === '')
+        return undefined
+
+      numValue = Number(trimmedYuan)
+    }
+    else if (isNumber(yuan)) {
+      numValue = yuan
+    }
+    else {
+      return undefined
+    }
 
     /* 验证转换后的值是否为有效数字 */
-    if (!isNumber(numValue) || Number.isNaN(numValue))
+    if (!Number.isFinite(numValue))
       return undefined
 
     /* 使用 number-precision 避免浮点数精度问题 */