sourceText.startsWith is not a function (v4.6.0)

Tell us about your environment

• ESLint Version: 4.6.0
• Node Version: 8.4.0
• npm Version: 5.3.0

What parser (default, Babel-ESLint, etc.) are you using? babel-eslint

Please show your full configuration:

Configuration

module.exports = {
  root: true,
  parser: 'babel-eslint',
  parserOptions: {
    sourceType: 'module'
  },
  env: {
    browser: true,
    node: true
  },
  globals: {
    __static: true
  },
  plugins: [
    'html'
  ],
  'rules': {
    'no-debugger': process.env.NODE_ENV === 'production' ? 2 : 0
  }
}

What did you do? Please include the actual source code causing the issue. Using the electron-vue boilerplate, default scaffold with eslint enabled using an empty configuration (also tried, using eslint-config-standard and eslint-config-airbnb-base).

What did you expect to happen? Expected code to be linted and fixed when possible. It has worked without error beforehand, but the new 4.6.0 version fails and produces the below error log. Reverting back to 4.5.0 does not produce the error and works as expected.

# original command, removing formatter doesn't fix either
eslint --ext .js,.vue -f ./node_modules/eslint-friendly-formatter --fix src

What actually happened? Please include the actual, raw output from ESLint.

> j@0.0.0 lint:fix /Users/gregholguin/Documents/Projects/playground/j
> eslint --ext .js,.vue -f ./node_modules/eslint-friendly-formatter --fix src

sourceText.startsWith is not a function
TypeError: sourceText.startsWith is not a function
    at Function.SourceCodeFixer.applyFixes (/Users/gregholguin/Documents/Projects/playground/j/node_modules/eslint/lib/util/source-code-fixer.js:76:26)
    at Function.SourceCodeFixer.applyFixes (/Users/gregholguin/Documents/Projects/playground/j/node_modules/eslint-plugin-html/src/index.js:152:23)
    at Linter.verifyAndFix (/Users/gregholguin/Documents/Projects/playground/j/node_modules/eslint/lib/linter.js:1258:43)
    at processText (/Users/gregholguin/Documents/Projects/playground/j/node_modules/eslint/lib/cli-engine.js:196:34)
    at processFile (/Users/gregholguin/Documents/Projects/playground/j/node_modules/eslint/lib/cli-engine.js:245:18)
    at executeOnFile (/Users/gregholguin/Documents/Projects/playground/j/node_modules/eslint/lib/cli-engine.js:585:25)
    at fileList.forEach.fileInfo (/Users/gregholguin/Documents/Projects/playground/j/node_modules/eslint/lib/cli-engine.js:622:13)
    at Array.forEach (<anonymous>)
    at CLIEngine.executeOnFiles (/Users/gregholguin/Documents/Projects/playground/j/node_modules/eslint/lib/cli-engine.js:621:18)
    at Object.execute (/Users/gregholguin/Documents/Projects/playground/j/node_modules/eslint/lib/cli.js:181:107)

[BenoitZugmeyer]

eslint-plugin-html 3.2.1 supports ESLint 4.6+. This issue can be closed.

[BenoitZugmeyer]

Sure thing: if your PR to allow autofix with plugins lands, I probably won’t need to patch SourceCodeFixer anymore. I didn’t test it yet, but it looks good. I’ll still need to patch eslint.verify, mainly to allow configuring file extensions to be considered as HTML via the eslintrc file. But this is another story, and your PR would make things simpler for me!