feat(mp): 新增 navigatePageBack

src/mp/index.ts

@@ -10,6 +10,7 @@
 export * from './ensureInMiniProgram'
 export * from './getTopBarInfo'
 export * from './miniProgramConfig'
+export * from './navigatePageBack'
 export * from './navigatePageTo'
 export * from './redirectPageTo'
 export * from './submit'

src/mp/navigatePageBack.test.ts

@@ -0,0 +1,21 @@
+describe('navigatePageBack', () => {
+  const navigateBack = jest
+    .fn()
+    .mockImplementation((options: WechatMiniprogram.NavigateBackOption) => {
+      options.success?.({} as any)
+    })
+
+  beforeAll(() => {
+    jest.mock('../utils/inMiniProgram', () => ({
+      inMiniProgram: (): Partial<WechatMiniprogram.Wx> => ({
+        navigateBack: navigateBack,
+      }),
+    }))
+  })
+
+  test('表现正常', async () => {
+    const { navigatePageBack } = await import('./navigatePageBack')
+    await navigatePageBack()
+    expect(navigateBack).toBeCalled().toBeCalledTimes(1)
+  })
+})

src/mp/navigatePageBack.ts

@@ -0,0 +1,14 @@
+import { ensureInMiniProgram } from './ensureInMiniProgram'
+
+export function navigatePageBack(delta = 1): Promise<any> {
+  return ensureInMiniProgram(
+    mp =>
+      new Promise((resolve, reject) => {
+        mp.navigateBack({
+          delta: delta,
+          success: resolve,
+          fail: reject,
+        })
+      }),
+  )
+}