Before this change:
```
[ray@localhost DefinitelyTyped]$ tsc --noImplicitAny bunyan/bunyan-test.ts --module commonjs --target es6
bunyan/bunyan-test.ts(3,1): error TS1202: Import assignment cannot be
used when targeting ECMAScript 6 or higher. Consider using 'import * as
ns from "mod"', 'import {a} from "mod"' or 'import d from "mod"'
instead.
bunyan/bunyan.d.ts(9,5): error TS1202: Import assignment cannot be used
when targeting ECMAScript 6 or higher. Consider using 'import * as ns
from "mod"', 'import {a} from "mod"' or 'import d from "mod"' instead.
[ray@localhost DefinitelyTyped]$
```
After this change:
```
[ray@localhost DefinitelyTyped]$ tsc --noImplicitAny bunyan/bunyan-test.ts --module commonjs --target es6
[ray@localhost DefinitelyTyped]$
```
