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```javascript
var parse = require('spdx-expression-parse')
var assert = require('assert')
var firstAST = {
left: { license: 'LGPL-2.1' },
conjunction: 'or',
right: {
left: { license: 'BSD-3-Clause' },
conjunction: 'and',
right: { license: 'MIT' } } }
assert.deepEqual(
parse('(LGPL-2.1 OR BSD-3-Clause AND MIT)'),
firstAST)
var secondAST = {
left: { license: 'MIT' },
conjunction: 'and',
right: {
left: {
license: 'LGPL-2.1',
plus: true },
conjunction: 'and',
right: { license: 'BSD-3-Clause' } } }
assert.deepEqual(
parse('(MIT AND (LGPL-2.1+ AND BSD-3-Clause))'),
secondAST)
// We handle all the bare SPDX license and exception ids as well.
require('spdx-license-ids').forEach(function(id) {
assert.deepEqual(
parse(id),
{ license: id })
require('spdx-exceptions').forEach(function(e) {
assert.deepEqual(
parse(id + ' WITH ' + e),
{ license: id, exception: e }) }) })
```
---
[The Software Package Data Exchange (SPDX) specification](http://spdx.org) is the work of the [Linux Foundation](http://www.linuxfoundation.org) and its contributors, and is licensed under the terms of [the Creative Commons Attribution License 3.0 Unported (SPDX: "CC-BY-3.0")](http://spdx.org/licenses/CC-BY-3.0). "SPDX" is a United States federally registered trademark of the Linux Foundation.
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