feat: add scope method

src/common/index.js

@@ -6,4 +6,5 @@ export { getURLFileExtension } from './getURLFileExtension'
 export { isArray } from './isArray'
 export { isCorsSupported } from './isCorsSupported'
 export { isObject } from './isObject'
+export { scope } from './scope'
 export { uuid } from './uuid'

src/common/scope.js

@@ -0,0 +1,11 @@
+/**
+ * Bind methods on a given context
+ *
+ * @param {object} ctx Context
+ * @param {array} methodNames Method names
+ */
+export function scope (ctx, methodNames) {
+  for (let i = 0, l = methodNames.length; i < l; i++) {
+    ctx[methodNames[i]] = ctx[methodNames[i]].bind(ctx)
+  }
+}

test/common/scope.test.js

@@ -0,0 +1,28 @@
+import { scope } from '../../src/common'
+
+describe('common.scope()', () => {
+  it('Check if method is binded', () => {
+    const o = {
+      test () { return this }
+    }
+
+    const testCall = o.test()
+    scope(o, ['test'])
+
+    expect(testCall.hasOwnProperty('prototype')).toBeFalsy()
+  })
+
+  it('Check if methods are binded', () => {
+    const o = {
+      test1 () { return this },
+      test2 () { return this }
+    }
+
+    const test1Call = o.test1()
+    const test2Call = o.test2()
+    scope(o, ['test1', 'test2'])
+
+    expect(test1Call.hasOwnProperty('prototype')).toBeFalsy()
+    expect(test2Call.hasOwnProperty('prototype')).toBeFalsy()
+  })
+})