feat: scope inheritance support (#23)

also:
- add ability to access consola using global object
- add jest tests

package.json

@@ -8,7 +8,8 @@
   "module": "./src/index.js",
   "scripts": {
     "build": "bili",
-    "test": "true",
+    "lint": "eslint --ext .js,.mjs src test examples",
+    "test": "jest test/",
     "prepublish": "yarn build",
     "release": "standard-version && yarn build && git push --follow-tags && npm publish"
   },
@@ -46,6 +47,7 @@
     "eslint-plugin-standard": "^4.0.0",
     "eslint-plugin-vue": "^4.7.1",
     "esm": "^3.0.84",
+    "jest": "^23.6.0",
     "standard-version": "^4.4.0",
     "winston": "^3.1.0"
   }

src/consola.js

@@ -25,7 +25,9 @@ export default class Consola {
 
       const logObj = Object.assign({
         date: new Date()
-      }, defaults)
+      }, defaults, {
+        scope: this.scope
+      })
 
       const argsStr = Array.from(args).map(String).join(' ')
 

src/index.js

@@ -19,6 +19,8 @@ if (!consola) {
   }
 
   Object.assign(consola, { Consola }, Reporters)
+
+  global.consola = consola
 }
 
 export default consola

test/custom-consola.test.js

@@ -0,0 +1,49 @@
+
+describe('custom consola', () => {
+  afterEach(() => {
+    delete global.consola
+    jest.resetModules()
+  })
+
+  test('require twice has same consola', () => {
+    const consola1 = require('consola')
+    jest.resetModules()
+    const consola2 = require('consola')
+
+    expect(consola1 === consola2).toBe(true)
+  })
+
+  test('custom consola fails without delete cache', async () => {
+    require('consola')
+    const consola1 = 'my-consola'
+    global.consola = consola1
+
+    const consola2 = require('consola')
+
+    expect(consola1 === consola2).toBe(false)
+    expect(global.consola === consola2).toBe(false)
+  })
+
+  test('require consola used global.consola by default', () => {
+    const consola1 = 'my-consola'
+    global.consola = consola1
+
+    const consola2 = require('consola')
+    expect(consola1 === consola2).toBe(true)
+    expect(global.consola === consola2).toBe(true)
+  })
+
+  test('custom consola works when imported but deleted', () => {
+    const consola0 = require('consola')
+    expect(consola0).not.toBe(undefined)
+
+    const consola1 = 'my-consola2'
+    global.consola = consola1
+
+    jest.resetModules() // jest equivalent to delete require.cache
+
+    const consola2 = require('consola')
+    expect(consola1 === consola2).toBe(true)
+    expect(global.consola === consola2).toBe(true)
+  })
+})