esbuild-plugin-wasm

An asynchronous .wasm file loader for esbuild that lets you import WebAssembly modules directly via import statements, following the WebAssembly/ES Module Integration proposal. Current stable version is 1.1.0. It supports two modes: 'deferred' (default, copies WASM binary to output and fetches at runtime) and 'embedded' (embeds as base64, increasing bundle size ~30%). Requires esbuild >=0.11.0 and Node >=10.0.0. Key differentiator: lightweight alternative to heavier bundler setups, but note that top-level await only works with 'esm' output format, not 'iife' or 'cjs'. Ships TypeScript definitions.