Cargo Features

[dependencies]
wasmparser = { version = "0.211.1", default-features = false, features = ["std", "no-hash-maps", "validate", "serde"] }
default = serde, std, validate

These default features are set whenever wasmparser is added without default-features = false somewhere in the dependency tree.

std default

A feature which enables implementations of std::error::Error as appropriate along with other convenience APIs. This additionally uses the standard library's source of randomness for seeding hash maps.

Enables std of indexmap

no-hash-maps

Tells the wasmparser crate to avoid using hash based maps and sets.

Some embedded environments cannot provide a random source which is required to properly initialize hashmap based data structures for resilience against malious actors that control their inputs.

validate default

A feature that enables validating WebAssembly files. This is enabled by default but not required if you're only parsing a file, for example, as opposed to validating all of its contents.

Enables ahash, hashbrown, indexmap, and semver

Affects wasmparser::collections

serde default

Enable Serialize/Deserialize implementations for types in wasmparser::collections

Enables serde, serde of hashbrown and indexmap