@wrench/roll-typescript/es/typescript-dts.js

plugin for bundling TypeScript with support of modular output and declaration bundle

import { __awaiter } from "tslib";
import { bundleDts } from "./bundle-dts";
import { addFileNames, collectDependencies } from "./host";
import { Project } from "./project";
import { isOutputChunkWithId, lazy } from "./util";
const NAME = "@wrench/typescript-dts";
const NULL_NAME = `\0${NAME}`;
const EXPORT_NULL = "exports = null;";
export function typescriptDts(options) {

    options = Object.assign({}, options);
    let entry;
    let project;
    return {
        name: NAME,
        options(input) {
            if (typeof input.input === "string")
                entry = input.input;
            else
                throw new Error("input should be a single file!");
            return null;
        },
        buildStart(input) {
            project = lazy(this, "project", createProject, options);
            const dependencies = collectDependencies(project, input.input);
            addFileNames(project, dependencies);
        },
        resolveId(specifier, importer) {
            ensureDeclarationFileName(importer || specifier);
            return NULL_NAME;
        },
        load(id) {
            return __awaiter(this, void 0, void 0, function* () {
                if (id === NULL_NAME)
                    return EXPORT_NULL;
            });
        },
        generateBundle(output, bundle) {
            for (const key of Object.keys(bundle))
                if (isOutputChunkWithId(bundle[key], NULL_NAME))
                    delete bundle[key];
            bundleDts({
                entry,
                program: project.getProgram(),
                output: output.file,
            });
        },
    };
}
function ensureDeclarationFileName(fileName) {
    if (!fileName.endsWith(".d.ts"))
        throw new Error("should only contain '.d.ts.' files, but found: " + fileName);
}
function createProject(options) {
    const ts = options.typescript || require("typescript");
    return new Project({
        ts,
        options: Object.assign(Object.assign({}, ts.getDefaultCompilerOptions()), { allowJs: false, sourceMap: false, declaration: true }),
    });
}