WABT(1) General Commands Manual WABT(1)

wat-desugarparse .wat text form and print canonical flat format

wat-desugar [options] filename

wat-desugar read a file in the wasm s-expression format and format it.

The options are as follows:

Print this help message
Print version information
, --output=FILE
Output file for the formatted file
, --fold-exprs
Write folded expressions where possible
Write all exports inline
Write all imports inline
Enable Experimental exception handling
Disable Import/export mutable globals
Disable Saturating float-to-int operators
Disable Sign-extension operators
Disable SIMD support
Enable Threading support
Enable Typed function references
Disable Multi-value
Enable Tail-call support
Disable Bulk-memory operations
Disable Reference types (externref)
Enable Custom annotation syntax
Enable Code metadata
Enable Garbage collection
Enable 64-bit memory
Enable Multi-memory
Enable Extended constant expressions
Enable Relaxed SIMD
Enable Custom page sizes
Enable Compact import section
Enable Wide arithmetic
Enable all features

write output to stdout

$ wat-desugar test.wat
write output to test2.wat

$ wat-desugar test.wat -o test2.wat
generate names for indexed variables

$ wat-desugar --generate-names test.wat

wasm-interp(1), wasm-objdump(1), wasm-stats(1), wasm-strip(1), wasm-validate(1), wasm2c(1), wasm2wat(1), wast2json(1), wat2wasm(1), spectest-interp(1)

If you find a bug, please report it at
https://github.com/WebAssembly/wabt/issues.

June 22, 2026 Debian