Finding tslint.json doesn't work like it used to after update.

[vhakulinen]

Bug Report

After upgrading from tslint from 4.0.2 to 5.5.0, tslint doesn't find tslint.json anymore unless it sits in the some directory you're running tslint from. @ajafff suggested that this relates to some recent refactoring of the code that finds the config file.

One notable (maybe a bit unique) note on the code base I'm working in; it has multiple (nested) typescript "projects" (aka tsconfig.json files) and one global tslint.json file on the root of the code base. The tslint.json file is found if I open my editor (or run tslint from command line) in the directory where tslint.json file is. IIRC, my co workers have the same issue with vscode also. Currently I have some viml written to check for the file (in the path) and pass it as commandline option.

• 5.5.0:
• 2.4.1:
• Running TSLint via: (neo)vim's plugin and/or command line

TypeScript code being linted

Can be anything.

with tslint.json configuration:

This can also be anything.

Actual behavior

tslint.json file is not found.

Expected behavior

tslint.json file is found and it's rules loaded.

[ajafff]

findup-sync used to search until the root directory is reached.
IIRC the current implementation stops at the current directory (when using relative paths). To fix this, the path needs to be resolved to an absolute one before the lookup.