jlens-cli

jlens: evaluate, check and explain JSONata expressions from the command line. Part of jlens.

npx jlens-cli --version          # run it once
npm install --save-dev jlens-cli # or add it to a project, then run `jlens` in npm scripts

The package runs the native jlens binary of the GitHub release, which npm installs from one of the optional dependencies jlens-cli-<os>-<cpu>: Linux (x64 and arm64, static), macOS (x64 and arm64) and Windows (x64). It has no install scripts.

$ jlens eval -i order.json '$sum(items.(price * qty))'
25

$ jlens eval --ndjson --filter -i orders.ndjson 'total > 1000'     # grep for JSON
$ jlens eval -f rule.jsonata -i order.json --explain               # why this result?
$ jlens schema infer samples/*.json -o order.schema.json           # learn the structure
$ jlens check --schema order.schema.json -f rule.jsonata           # catch misspelt fields
$ jlens test tests/*.json                                          # run the rules' cases

The CLI guide of the jlens book documents every command, option and exit code. To use JSONata from JavaScript code instead, install the library jlens-wasm.

License

MIT.