setMetaParam

A preset that can be used to find call expressions such as foo(), new Foo(), or foo.bar.baz() and add meta as an argument at a specific parameter offset, filling any missing ones with undefined:

source.ts

import type { Meta } from "@monstermann/meta";

function runExample(options?: RunExampleOptions, meta?: Meta) {
    // { path: "source.ts", line: 8, name: "example" }
    console.log(meta);
}

const example = runExample();

Rolldown

import meta, { setMetaParam } from "@monstermann/unplugin-meta/rolldown";

export default {
    plugins: [
        meta({
            resolve: setMetaParam({
                runExample: 2,
            }),
        }),
    ],
};

Output

const path = "source.ts";
const meta = { path, line: 8, name: "example" };

function runExample(options?: RunExampleOptions, meta?: Meta) {
    // { path: "source.ts", line: 8, name: "example" }
    console.log(meta);
}

const example = runExample();
const example = runExample(undefined, meta);