mops watch
Watch Motoko files, check them for syntax errors and warnings, and format them
mops watch
By default, mops watch runs the safe informative set:
- Check for syntax errors
- Check for warnings
- Format Motoko files
Tests are opt-in — they run only when requested with --test.
Passing any flag runs only the selected tasks (error checking is always on).
Options
--error
Check Motoko files for syntax errors.
Always enabled.
mops watch --error
--warning
Check Motoko files for warnings.
Part of the default set (runs when no flags are passed).
mops watch --warning
--format
Format Motoko files.
Part of the default set (runs when no flags are passed).
mops watch --format
--test
Run Motoko tests. Opt-in — never runs unless this flag is passed.
mops watch --test
Replica tests run on PocketIC, using the pocket-ic version pinned in mops.toml under [toolchain], or an already-running server when MOPS_POCKET_IC_URL is set. There is no default — pin one with mops toolchain use pocket-ic 15.0.0.
Examples
Check syntax errors, show warnings and format files (the default set)
mops watch
Check syntax errors and show warnings (no formatting)
mops watch --warning
Check syntax errors and run tests
mops watch --test
or
mops watch -t
Everything: warnings, formatting and tests
mops watch -wtf
Because passing any flag selects only the named tasks, -t does not include the warning check or formatting — add -w and -f when you want them.