chore(dev-infra): create TsJestPresets type based on Jest `InitialO…

…ptions` type (#1675)
kulshekhar · May 24, 2020 · 8f2b2dc · 8f2b2dc
1 parent a1d425c
commit 8f2b2dc
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Showing 2 changed files with 24 additions and 24 deletions.
diff --git a/src/config/create-jest-preset.spec.ts b/src/config/create-jest-preset.spec.ts
@@ -1,33 +1,35 @@
 import { createJestPreset } from './create-jest-preset'
 
-it('should return correct defaults when allowJs is false or not set', () => {
-  const withoutJs = {
-    transform: {
-      '^.+\\.tsx?$': 'ts-jest',
-    },
-  }
-  expect(createJestPreset()).toEqual(withoutJs)
-  expect(createJestPreset({ allowJs: false })).toEqual(withoutJs)
-})
+describe('create-jest-preset', () => {
+  it('should return correct defaults when allowJs is false or not set', () => {
+    const withoutJs = {
+      transform: {
+        '^.+\\.tsx?$': 'ts-jest',
+      },
+    }
+    expect(createJestPreset()).toEqual(withoutJs)
+    expect(createJestPreset({ allowJs: false })).toEqual(withoutJs)
+  })
 
-it('should return correct defaults when allowJs is true', () => {
-  expect(createJestPreset({ allowJs: true })).toEqual({
-    transform: {
-      '^.+\\.[tj]sx?$': 'ts-jest',
-    },
+  it('should return correct defaults when allowJs is true', () => {
+    expect(createJestPreset({ allowJs: true })).toEqual({
+      transform: {
+        '^.+\\.[tj]sx?$': 'ts-jest',
+      },
+    })
   })
-})
 
-it('should be able to use a base config', () => {
-  expect(createJestPreset(undefined, {})).toMatchInlineSnapshot(`
+  it('should be able to use a base config', () => {
+    expect(createJestPreset(undefined, {})).toMatchInlineSnapshot(`
 Object {
   "transform": Object {
     "^.+\\\\.tsx?$": "ts-jest",
   },
 }
 `)
-  expect(createJestPreset(undefined, { testMatch: ['foo'], moduleFileExtensions: ['bar'], transform: { foo: 'bar' } }))
-    .toMatchInlineSnapshot(`
+    expect(
+      createJestPreset(undefined, { testMatch: ['foo'], moduleFileExtensions: ['bar'], transform: { foo: 'bar' } }),
+    ).toMatchInlineSnapshot(`
 Object {
   "moduleFileExtensions": Array [
     "bar",
@@ -41,4 +43,5 @@ Object {
   },
 }
 `)
+  })
 })
diff --git a/src/config/create-jest-preset.ts b/src/config/create-jest-preset.ts
@@ -4,11 +4,7 @@ import { rootLogger } from '../util/logger'
 
 const logger = rootLogger.child({ namespace: 'jest-preset' })
 
-export interface TsJestPresets {
-  transform: Config.InitialOptions['transform']
-  testMatch?: string[]
-  moduleFileExtensions?: string[]
-}
+export type TsJestPresets = Pick<Config.InitialOptions, 'moduleFileExtensions' | 'transform' | 'testMatch'>
 
 export interface CreateJestPresetOptions {
   allowJs?: boolean
@@ -19,6 +15,7 @@ export function createJestPreset(
   from: Config.InitialOptions = {},
 ): TsJestPresets {
   logger.debug({ allowJs }, 'creating jest presets', allowJs ? 'handling' : 'not handling', 'JavaScript files')
+
   return {
     transform: {
       ...from.transform,