This set of pages details the top-level module definition features available in Wasm for defining items such as tables, types, memories, functions, etc.

Types

• func

  • : A function signature, which defines a function’s identifier, parameter types, body, and result types.

Definitions

• data

  • : Defines a segment of bytes that can be copied into linear memory.

  elem

  • : Declares a series of references that can be copied into a Wasm table.

  global

  • : Creates a new global.

  memory

  • : Declares a block of linear memory in units of 64KB pages.

  table

  • : Creates a new table.

  tag

  • : Declares an exception type that can be thrown in the module.

Specifications