Re-emit inconsistency for ISubType

[ikatyang]

Version

• dts-element v2.2.0
• typescript v2.4.2

Code

import * as ts from 'typescript';
import * as dts from 'dts-element';

const source = `type X = A[B[C]];`;
const sourceFile = ts.createSourceFile(
  'test.ts',
  source,
  ts.ScriptTarget.Latest,
  false,
  ts.ScriptKind.TS,
);

console.log('[ts]', ts.createPrinter().printFile(sourceFile));
console.log('[dts]', dts.emit(dts.parse(source)));

Expected

[ts] type X = A[B[C]];
[dts] type X = A[B[C]];

Actual

[ts] type X = A[B[C]];
[dts] type X = A[B[C]][C];