feat(coverage): istanbul coverage only for changed files (#2385)

* feat: Istanbul Coverage only for changed Files

Signed-off-by: GurkiranSingh <gurkiransinghk@gmail.com>

* chore: latest pnpm install changes

Signed-off-by: GurkiranSingh <gurkiransinghk@gmail.com>

* chore: removed previous changes related to ctx.changedTests and watchAll config option

Signed-off-by: GurkiranSingh <gurkiransinghk@gmail.com>

* chore: cleanOnReRun=true and all=false if watch mode is enabled

Signed-off-by: GurkiranSingh <gurkiransinghk@gmail.com>

* chore: deleted example

Signed-off-by: GurkiranSingh <gurkiransinghk@gmail.com>

* chore: updated pnpm-lock file after deleting example

Signed-off-by: GurkiranSingh <gurkiransinghk@gmail.com>

* chore: change default value for clearOnReRun=true, since watch= true by default

Signed-off-by: GurkiranSingh <gurkiransinghk@gmail.com>

* chore: Updated pnpm-lock.yaml file

Signed-off-by: GurkiranSingh <gurkiransinghk@gmail.com>

* chore: Update pnpm-lock.yaml

Signed-off-by: GurkiranSingh <gurkiransinghk@gmail.com>

* chore: Update pnpm.yaml file as per in main branch

Signed-off-by: GurkiranSingh <gurkiransinghk@gmail.com>

Signed-off-by: GurkiranSingh <gurkiransinghk@gmail.com>

Author: g4rry420

docs/config/index.md

@@ -635,7 +635,7 @@ Clean coverage results before running tests
 #### cleanOnRerun
 
 - **Type:** `boolean`
-- **Default:** `false`
+- **Default:** `true`
 - **Available for providers:** `'c8' | 'istanbul'`
 
 Clean coverage report on watch rerun

packages/vitest/src/defaults.ts

@@ -25,10 +25,11 @@ const defaultCoverageExcludes = [
 ]
 
 const coverageConfigDefaults = {
+  all: false,
   provider: 'c8',
   enabled: false,
   clean: true,
-  cleanOnRerun: false,
+  cleanOnRerun: true,
   reportsDirectory: './coverage',
   excludeNodeModules: true,
   exclude: defaultCoverageExcludes,

packages/vitest/src/types/coverage.ts

@@ -101,7 +101,7 @@ export interface BaseCoverageOptions {
   /**
    * Clean coverage report on watch rerun
    *
-   * @default false
+   * @default true
    */
   cleanOnRerun?: boolean