Installation

pnpm add -D eslint-formatter-proxy

Configuration

ESLint does not provide a way to pass settings to custom formatters. So we have to use an environment variable.

Set ESLINT_FORMATTER_PROXY to you configuration.

It expects a list of names, or name-options tuples. Currently the only option is outFile which writes the result to disk instead of stdout.

ESLINT_FORMATTER_PROXY='["stylish", ["json", {"outFile": "./eslint.json"}]]' eslint -f eslint-formatter-proxy
#                            │          │         │            │
#                            │          │         │            └─ Write to <cwd>/eslint.json
#                            │          │         │
#                            │          │         └────────────── Write to file instead of stdout
#                            │          │
#                            │          └──────────────────────── Use builtin "json" formatter
#                            │
#                            └─────────────────────────────────── Use the builtin "stylish" formatter to print to stdout