Web Assembly Text Format
Textual representation of the wasm binary format.
https://developer.mozilla.org/en-US/docs/WebAssembly/Understanding_the_text_format
Demos
Here are some excellent demos written with Web Assembly Text format: https://github.com/binji/raw-wasm
Writing raw WAT files
Each web assembly module (in wat) is represented as an s-expression (which is basically a tree).
most basic module
(module)
Types
i32
32-bit integeri64
64-bit integerf32
32-bit floatf64
64-bit float