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Fails when parser is babel-eslint and using ES6 import syntax

See original GitHub issue

package.json:

{
  "name": "eslint-test",
  "version": "0.0.0",
  "devDependencies": {
    "babel-eslint": "^1.0.12",
    "eslint": "^0.15.1",
    "gulp": "^3.8.11",
    "gulp-eslint": "^0.5.0"
  }
}

.eslintrc:


---
parser: babel-eslint

gulpfile.js:

ar gulp = require('gulp');
var eslint = require('gulp-eslint');

gulp.task('lint', function() {
  gulp.src(['index.js'])
    .pipe(eslint())
    .pipe(eslint.format());
});

gulp.task('default', ['lint']);

index.js:

import gulp from 'gulp';

Using the eslint binary works as expected:

$ ./node_modules/.bin/eslint index.js

index.js
  1:7   error  gulp is defined but never used  no-unused-vars
  1:17  error  Strings must use doublequote    quotes

✖ 2 problems (2 errors, 0 warnings)

But using gulp task blows up:

$ gulp
[11:57:41] Using gulpfile ~/stuff/eslint-test/gulpfile.js
[11:57:41] Starting 'lint'...
[11:57:41] Finished 'lint' after 14 ms
[11:57:41] Starting 'default'...
[11:57:41] Finished 'default' after 12 μs

/Users/kentor/stuff/eslint-test/node_modules/gulp-eslint/node_modules/eslint/node_modules/escope/escope.js:73
            throw new Error(text);
                  ^
Error
    at assert (/Users/kentor/stuff/eslint-test/node_modules/gulp-eslint/node_modules/eslint/node_modules/escope/escope.js:73:19)
    at Referencer.extend.ImportDeclaration (/Users/kentor/stuff/eslint-test/node_modules/gulp-eslint/node_modules/eslint/node_modules/escope/escope.js:1348:13)
    at Referencer.Visitor.visit (/Users/kentor/stuff/eslint-test/node_modules/gulp-eslint/node_modules/eslint/node_modules/escope/node_modules/esrecurse/esrecurse.js:109:34)
    at Referencer.Visitor.visitChildren (/Users/kentor/stuff/eslint-test/node_modules/gulp-eslint/node_modules/eslint/node_modules/escope/node_modules/esrecurse/esrecurse.js:88:38)
    at Referencer.extend.Program (/Users/kentor/stuff/eslint-test/node_modules/gulp-eslint/node_modules/eslint/node_modules/escope/escope.js:1201:18)
    at Referencer.Visitor.visit (/Users/kentor/stuff/eslint-test/node_modules/gulp-eslint/node_modules/eslint/node_modules/escope/node_modules/esrecurse/esrecurse.js:109:34)
    at Object.analyze (/Users/kentor/stuff/eslint-test/node_modules/gulp-eslint/node_modules/eslint/node_modules/escope/escope.js:1392:20)
    at EventEmitter.module.exports.api.verify (/Users/kentor/stuff/eslint-test/node_modules/gulp-eslint/node_modules/eslint/lib/eslint.js:623:35)
    at verify (/Users/kentor/stuff/eslint-test/node_modules/gulp-eslint/index.js:21:25)
    at DestroyableTransform._transform (/Users/kentor/stuff/eslint-test/node_modules/gulp-eslint/index.js:44:18)