svelte-i18n provides a command-line interface to extract all your messages to the stdout or to a specific JSON file.

$ svelte-i18n extract [options] <glob-pattern> [output-file]

• -s, --shallow - extract all messages to a shallow object, without creating nested objects. Default: false.

• --overwrite - overwrite the content of the output file instead of just appending missing properties. Default: false.

• -c, --config - define the path of a svelte.config.js in case your svelte components need to be preprocessed.