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Build WASM

Build for Browsers​

Building WebAssembly from AssemblyScript uses asc command.

The following command builds AssemblyScript and generates prime.js and prime.wasm in build directory.

build for browsers
asc assembly/prime.ts --target release -o build/prime.wasm

Other asc command options can be found at Using the compiler.

Build for Standalone​

When building the program for standalone runtime, abort function have to be defined. 

export function abort(
    message: usize,
    fileName: usize,
    line: u32,
    column: u32
): void {
    throw new Error("aborted");
}

The following command builds AssemblyScript and generates prime_standalone.js and prime_standalone.wasm in build directory.

build for standalone
asc assembly/prime.ts --target release --use abort=assembly/prime/abort -o build/prime_standalone.wasm

Additional options have to be well considered.
For example, wasmi runtime does not support bulk memory operation. So --disable bulk-memory option have to be set on build.

build for standalone with disabling bulk memory operation
asc assembly/prime.ts --target release --use abort=assembly/prime/abort -o build/prime_standalone.wasm --disable bulk-memory