fix(test): add @ts-expect-error comments for intentional type mismatches

Author: jdalton

test/argv-flags.test.ts

@@ -415,12 +415,16 @@ describe('argv/flags', () => {
 
   describe('edge cases', () => {
     it('should handle truthy values as boolean true', () => {
+      // @ts-expect-error - Testing runtime coercion of non-boolean values
       expect(isDebug({ debug: 1 } as FlagValues)).toBe(true)
+      // @ts-expect-error - Testing runtime coercion of non-boolean values
       expect(isVerbose({ verbose: 'yes' } as FlagValues)).toBe(true)
     })
 
     it('should handle falsy values as boolean false', () => {
+      // @ts-expect-error - Testing runtime coercion of non-boolean values
       expect(isDebug({ debug: 0 } as FlagValues)).toBe(false)
+      // @ts-expect-error - Testing runtime coercion of non-boolean values
       expect(isDebug({ debug: '' } as FlagValues)).toBe(false)
     })
 

test/cacache.test.ts

@@ -443,6 +443,7 @@ describe('cacache', () => {
         expect(removed).toBeGreaterThanOrEqual(0)
 
         // Verify cleared
+        // @ts-expect-error - safeGet signature doesn't match map callback but works at runtime
         const results = await Promise.all(keys.map(safeGet))
         results.forEach(result => expect(result).toBeUndefined())
       } catch (e) {
@@ -568,6 +569,7 @@ describe('cacache', () => {
         await Promise.all(keys.map(key => put(key, `data-${key}`)))
 
         // Concurrent gets
+        // @ts-expect-error - safeGet signature doesn't match map callback but works at runtime
         const entries = await Promise.all(keys.map(safeGet))
         entries.forEach(entry => {
           if (entry) {

test/json.test.ts

@@ -679,6 +679,7 @@ describe('json', () => {
       it('should handle array-like objects with non-number first element', () => {
         // Tests line 166-171: length > 0 but obj[0] is not a number
         expect(() => {
+          // @ts-expect-error - Testing Buffer-like object with invalid method signatures
           jsonParse({
             length: 1,
             0: 'not a number',
@@ -691,6 +692,7 @@ describe('json', () => {
       it('should handle objects without proper constructor', () => {
         // Tests line 174-177: constructor.isBuffer checks
         expect(() => {
+          // @ts-expect-error - Testing Buffer-like object with invalid method signatures
           jsonParse({
             length: 0,
             copy: () => {},
@@ -700,6 +702,7 @@ describe('json', () => {
         }).toThrow()
 
         expect(() => {
+          // @ts-expect-error - Testing Buffer-like object with invalid method signatures
           jsonParse({
             length: 0,
             copy: () => {},