Cannot read property 'directory' of null when not passing a config object

[srmagura]

Other import-resolver plugins (e.g. webpack) allow you to use the default configuration by writing

settings: {
    'import/resolver': 'webpack'
}

in .eslintrc.

If you try this syntax with eslint-import-resolver-typescript, you get

  1:1   error    Resolve error: TypeError: Cannot read property 'directory' of null
    at initMappers (C:\Projects\CareServices\CDS2\Source\node_modules\eslint-import-resolver-typescript\lib\cjs.js:102:38)
    at Object.resolve (C:\Projects\CareServices\CDS2\Source\node_modules\eslint-import-resolver-typescript\lib\cjs.js:34:5)
    at v2 (C:\Projects\CareServices\CDS2\Source\node_modules\eslint-module-utils\resolve.js:117:23)
    at withResolver (C:\Projects\CareServices\CDS2\Source\node_modules\eslint-module-utils\resolve.js:122:16)
    at fullResolve (C:\Projects\CareServices\CDS2\Source\node_modules\eslint-module-utils\resolve.js:139:22)
    at relative (C:\Projects\CareServices\CDS2\Source\node_modules\eslint-module-utils\resolve.js:84:10)
    at resolve (C:\Projects\CareServices\CDS2\Source\node_modules\eslint-module-utils\resolve.js:220:12)
    at isExternalRootModule (C:\Projects\CareServices\CDS2\Source\node_modules\eslint-plugin-import\lib\rules\extensions.js:133:82)
    at checkFileExtension (C:\Projects\CareServices\CDS2\Source\node_modules\eslint-plugin-import\lib\rules\extensions.js:153:11)
    at listeners.(anonymous function).forEach.listener (C:\Projects\CareServices\CDS2\Source\node_modules\eslint\lib\linter\safe-emitter.js:45:58)

The error is being thrown on line 142 of index.ts where we try to access options.directory without checking options for null.

Ideally, we would use the default config if options == null.

I will plan to submit a PR for this sometime in the next month. If someone else can get to it faster than that, go for it.

[JounQin]

@alexgorbatchev Do you have time to publish a patch version for this issue?