feat(typescript-estree): add option to ignore certain folders from glob resolution

[bradzacher]

Resolves #1771

I didn't realise, but there's a lot of packages that are published to npm with tsconfigs, and even .ts source files.

If you provide a wide glob like ./**/tsconfig.json, then it'll match those node modules, which means our parser will parse them, leading to wasted memory, and wasted parse time.

This PR adds an option for users to configure ignored folders. By default it just ignores node_modules.

I ran a test against our repo by changing the glob in our config to ./packages/**/tsconfig.json (added an extra *), and the following logs were output, doubly showing it's working

  typescript-eslint:typescript-estree:parser parserOptions.project matched projects: [
  './tsconfig.eslint.json',
  './packages/eslint-plugin-internal/node_modules/@typescript-eslint/experimental-utils/tsconfig.json',
  './packages/eslint-plugin-internal/tsconfig.json',
  './packages/eslint-plugin-tslint/node_modules/@typescript-eslint/experimental-utils/tsconfig.json',
  './packages/eslint-plugin-tslint/node_modules/@typescript-eslint/parser/tsconfig.json',
  './packages/eslint-plugin-tslint/tests/fixture-project/tsconfig.json',
  './packages/eslint-plugin-tslint/tests/test-project/tsconfig.json',
  './packages/eslint-plugin-tslint/tests/tsconfig.json',
  './packages/eslint-plugin-tslint/tsconfig.json',
  './packages/eslint-plugin/node_modules/@typescript-eslint/experimental-utils/tsconfig.json',
  './packages/eslint-plugin/tests/fixtures/tsconfig.json',
  './packages/eslint-plugin/tsconfig.json',
  './packages/experimental-utils/node_modules/@typescript-eslint/typescript-estree/tsconfig.json',
  './packages/experimental-utils/tsconfig.json',
  './packages/parser/node_modules/@typescript-eslint/experimental-utils/tsconfig.json',
  './packages/parser/node_modules/@typescript-eslint/shared-fixtures/tsconfig.json',
  './packages/parser/node_modules/@typescript-eslint/typescript-estree/tsconfig.json',
  './packages/parser/tests/fixtures/services/tsconfig.json',
  './packages/parser/tsconfig.json',
  './packages/shared-fixtures/tsconfig.json',
  './packages/typescript-estree/node_modules/@typescript-eslint/shared-fixtures/tsconfig.json',
  './packages/typescript-estree/tests/fixtures/invalidFileErrors/tsconfig.json',
  './packages/typescript-estree/tests/fixtures/projectFolderIgnoreList/ignoreme/tsconfig.json',
  './packages/typescript-estree/tests/fixtures/projectFolderIgnoreList/includeme/tsconfig.json',
  './packages/typescript-estree/tests/fixtures/semanticInfo/badTSConfig/tsconfig.json',
  './packages/typescript-estree/tests/fixtures/semanticInfo/tsconfig.json',
  './packages/typescript-estree/tests/fixtures/simpleProject/tsconfig.json',
  './packages/typescript-estree/tsconfig.json'
] +0ms
  typescript-eslint:typescript-estree:parser ignore list applied to parserOptions.project: [
  './tsconfig.eslint.json',
  './packages/eslint-plugin-internal/tsconfig.json',
  './packages/eslint-plugin-tslint/tests/fixture-project/tsconfig.json',
  './packages/eslint-plugin-tslint/tests/test-project/tsconfig.json',
  './packages/eslint-plugin-tslint/tests/tsconfig.json',
  './packages/eslint-plugin-tslint/tsconfig.json',
  './packages/eslint-plugin/tests/fixtures/tsconfig.json',
  './packages/eslint-plugin/tsconfig.json',
  './packages/experimental-utils/tsconfig.json',
  './packages/parser/tests/fixtures/services/tsconfig.json',
  './packages/parser/tsconfig.json',
  './packages/shared-fixtures/tsconfig.json',
  './packages/typescript-estree/tests/fixtures/invalidFileErrors/tsconfig.json',
  './packages/typescript-estree/tests/fixtures/projectFolderIgnoreList/ignoreme/tsconfig.json',
  './packages/typescript-estree/tests/fixtures/projectFolderIgnoreList/includeme/tsconfig.json',
  './packages/typescript-estree/tests/fixtures/semanticInfo/badTSConfig/tsconfig.json',
  './packages/typescript-estree/tests/fixtures/semanticInfo/tsconfig.json',
  './packages/typescript-estree/tests/fixtures/simpleProject/tsconfig.json',
  './packages/typescript-estree/tsconfig.json'
] +3ms

[typescript-eslint]

Thanks for the PR, @bradzacher!

typescript-eslint is a 100% community driven project, and we are incredibly grateful that you are contributing to that community.

The core maintainers work on this in their personal time, so please understand that it may not be possible for them to review your work immediately.

Thanks again!

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[codecov]

Codecov Report

Merging #1802 into master will not change coverage by %.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1802   +/-   ##
=======================================
  Coverage   95.02%   95.02%           
=======================================
  Files         159      159           
  Lines        7112     7112           
  Branches     2033     2033           
=======================================
  Hits         6758     6758           
  Misses        154      154           
  Partials      200      200           

Flag	Coverage Δ
#unittest	95.02% <ø> (ø)