init

node_modules/get-assigned-identifiers/test/index.js

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+var test = require('tape')
+var assert = require('assert')
+var parse = require('acorn').parse
+var getAssignedIdentifiers = require('../')
+
+function getName (node) {
+  assert.equal(node.type, 'Identifier', 'Returned node must be an Identifier')
+  return node.name
+}
+
+test('example', function (t) {
+  t.plan(1)
+
+  var ast = parse(`
+    var { a, b: [ c,, ...x ], d } = whatever()
+  `)
+  var node = ast.body[0].declarations[0].id
+  t.deepEqual(getAssignedIdentifiers(node).map(getName), [
+    'a',
+    'c',
+    'x',
+    'd'
+  ])
+})
+
+test('simple identifiers', function (t) {
+  t.plan(1)
+  var ast = parse(`
+    var xyz = whatever()
+  `)
+  var node = ast.body[0].declarations[0].id
+  t.deepEqual(getAssignedIdentifiers(node).map(getName), [ 'xyz' ])
+})
+
+test('array destructuring', function (t) {
+  t.plan(1)
+  var ast = parse(`
+    var [a, b, c] = whatever()
+  `)
+  var node = ast.body[0].declarations[0].id
+  t.deepEqual(getAssignedIdentifiers(node).map(getName), [ 'a', 'b', 'c' ])
+})
+
+test('array destructuring with rest element', function (t) {
+  t.plan(1)
+  var ast = parse(`
+    var [a, b, ...rest] = whatever()
+  `)
+  var node = ast.body[0].declarations[0].id
+  t.deepEqual(getAssignedIdentifiers(node).map(getName), [ 'a', 'b', 'rest' ])
+})
+
+test('array destructuring with holes', function (t) {
+  t.plan(1)
+  var ast = parse(`
+    var [a, b,,,,,, boop] = whatever()
+  `)
+  var node = ast.body[0].declarations[0].id
+  t.deepEqual(getAssignedIdentifiers(node).map(getName), [ 'a', 'b', 'boop' ])
+})
+
+test('nested array destructuring', function (t) {
+  t.plan(1)
+  var ast = parse(`
+    var [a, [[[b]], ...c], boop] = whatever()
+  `)
+  var node = ast.body[0].declarations[0].id
+  t.deepEqual(getAssignedIdentifiers(node).map(getName), [ 'a', 'b', 'c', 'boop' ])
+})
+
+test('object destructuring', function (t) {
+  t.plan(1)
+  var ast = parse(`
+    var {a, b} = whatever()
+  `)
+  var node = ast.body[0].declarations[0].id
+  t.deepEqual(getAssignedIdentifiers(node).map(getName), [ 'a', 'b' ])
+})
+
+test('object destructuring with different names', function (t) {
+  t.plan(1)
+  var ast = parse(`
+    var {a: b, b: lol} = whatever()
+  `)
+  var node = ast.body[0].declarations[0].id
+  t.deepEqual(getAssignedIdentifiers(node).map(getName), [ 'b', 'lol' ])
+})
+
+test('nested object destructuring', function (t) {
+  t.plan(1)
+  var ast = parse(`
+    var {a: {b}, b: lol, c: {
+      d, e: { f: g }
+    }} = whatever()
+  `)
+  var node = ast.body[0].declarations[0].id
+  t.deepEqual(getAssignedIdentifiers(node).map(getName), [ 'b', 'lol', 'd', 'g' ])
+})
+
+test('object rest destructuring', function (t) {
+  t.plan(1)
+  var ast = parse(`
+    var {a, ...b} = whatever()
+  `, { ecmaVersion: 9 })
+  var node = ast.body[0].declarations[0].id
+  t.deepEqual(getAssignedIdentifiers(node).map(getName), [ 'a', 'b' ])
+})
+
+test('import declarations', function (t) {
+  t.plan(2)
+  var ast = parse(`
+    import x, { y, z as a } from 'module'
+  `, { sourceType: 'module' })
+  var node = ast.body[0]
+  t.deepEqual(getAssignedIdentifiers(node).map(getName), [ 'x', 'y', 'a' ])
+
+  ast = parse(`
+    import * as ns from 'module'
+  `, { sourceType: 'module' })
+  node = ast.body[0]
+  t.deepEqual(getAssignedIdentifiers(node).map(getName), [ 'ns' ])
+})