/Knowledge/sources/honojs__hono/llms-full/webassembly-w-wasi-set-up-wit-interface-dependencies--83e7b54a7a47.md
WebAssembly (w/ WASI): Set up WIT interface & dependencies - hono-docs
WebAssembly (w/ WASI): Set up WIT interface & dependencies Source evidence: /Sources/honojs hono/provenance.md Canonical citation: https://hono.dev/llms full...
WebAssembly (w/ WASI): Set up WIT interface & dependencies
Source evidence: /Sources/honojs__hono/provenance.md Canonical citation: https://hono.dev/llms-full.txt#2-set-up-wit-interface-dependencies
Summary
[WebAssembly Interface Types (WIT)][wit] is an Interface Definition Language ("IDL") that governs what functionality a WebAssembly component uses ("imports"), and what it provides ("exports"). Amongst the standardized WIT interfaces, [`w...
Content
[WebAssembly Interface Types (WIT)][wit] is an Interface Definition Language ("IDL") that governs what functionality a WebAssembly component uses ("imports"), and what it provides ("exports").
Amongst the standardized WIT interfaces, [wasi:http][wasi-http] is for dealing with HTTP requests (whether it's receiving them or sending them out), and since we intend to make a web server, our component must declare the use of wasi:http/incoming-handler in its [WIT world][wit-world]:
First, let's set up the component's WIT world in a file called wit/component.wit:
package example:hono;
world component {
export wasi:http/incoming-handler@0.2.6;
}
Put simply, the WIT file above means that our component "provides" the functionality of "receiving"/"handling incoming" HTTP requests.
Metadata
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