Error with NodeJS 10

[larskn]

Bug or missing documentation (depends)

• tslint-to-eslint-config version: 0.2.10
• Node version: 10.16.3
• OS: Windows 10 64-Bit

Actual Behavior

When running npx tslint-to-eslint-config with nodejs 10.16.3 installed, the following error occurs.

TypeError: [[rawConfiguration.extends],[reportedConfiguration.extends]].flat is not a function
at exports.findTSLintConfiguration [...]

After updating to 12.13.0 everything runs fine.

Is it intentional that only Node >=12 is supported? If yes, it might be useful to document it in the readme to prevent future bug reports.

[JoshuaKGoldberg]

Aha, yes, Node 12 is required. Thanks for reporting @larskn ! I'll add it to the README.md right away.