[Isolated Modules] Compiler error when const enum exists in imported module definition

[berickson1]

With the isolated modules flag on, I should be able to import any arbitrary external module without errors about using const enums improperly.

TypeScript Version: 2.7.0-dev.20171230

Code

import tsutils = require('tsutils');

export class Test {
    noop() {
    }
}

See: https://github.com/berickson1/Playground/blob/master/isolatedModuleError.ts

Expected behavior:
Compiles without error

Actual behavior:
Errors as below:

npm run build

[email protected] build /src/Playground
tsc

node_modules/tsutils/src/utils.d.ts(22,27): error TS1209: Ambient const enums are not allowed when the '--isolatedModules' flag is provided.
node_modules/tsutils/src/utils.d.ts(30,27): error TS1209: Ambient const enums are not allowed when the '--isolatedModules' flag is provided.

[HerringtonDarkholme]

Related #20703

[typescript-bot]

Automatically closing this issue for housekeeping purposes. The issue labels indicate that it is unactionable at the moment or has already been addressed.