dirWorker.ts

import slash from "slash";
import { dirname, relative } from "path";
import { CompileStatus } from "./constants";
import { compile, getDest, mapDtsExt, mapTsExt } from "./util";
import { outputResult } from "./compile";

import type { Options } from "@swc/core";
import type { CliOptions } from "./options";

export default async function handleCompile(opts: {
    filename: string;
    outDir: string;
    sync: boolean;
    cliOptions: CliOptions;
    swcOptions: Options;
    outFileExtension?: string;
}) {
    const dest = getDest(
        opts.filename,
        opts.outDir,
        opts.cliOptions.stripLeadingPaths,
        `.${opts.outFileExtension ?? mapTsExt(opts.filename)}`
    );
    const sourceFileName = slash(relative(dirname(dest), opts.filename));

    // Create a deep copy of the options to prevent mutation affecting other compilations
    const options = JSON.parse(
        JSON.stringify({ ...opts.swcOptions, sourceFileName })
    );

    const result = await compile(opts.filename, options, opts.sync, dest);

    if (result) {
        const destDts = getDest(
            opts.filename,
            opts.outDir,
            opts.cliOptions.stripLeadingPaths,
            `.${mapDtsExt(opts.filename)}`
        );
        const destSourcemap = dest + ".map";
        await outputResult({
            output: result,
            sourceFile: opts.filename,
            destFile: dest,
            destDtsFile: destDts,
            destSourcemapFile: destSourcemap,
            options,
        });
        return CompileStatus.Compiled;
    } else {
        return CompileStatus.Omitted;
    }
}