@typespec/compiler/dist/src/module-resolver/utils.js

TypeSpec compiler and standard library

import { getDirectoryPath } from "../core/path-utils.js";
// returns the imported package name for bare module imports
export function parseNodeModuleSpecifier(id) {
    if (id.startsWith(".") || id.startsWith("/")) {
        return null;
    }
    const split = id.split("/");
    // @my-scope/my-package/foo.js -> @my-scope/my-package
    // @my-scope/my-package -> @my-scope/my-package
    if (split[0][0] === "@") {
        return { packageName: `${split[0]}/${split[1]}`, subPath: split.slice(2).join("/") };
    }
    // my-package/foo.js -> my-package
    // my-package -> my-package
    return { packageName: split[0], subPath: split.slice(1).join("/") };
}
export async function readPackage(host, pkgfile) {
    const content = await host.readFile(pkgfile);
    return {
        ...JSON.parse(content),
        dir: getDirectoryPath(pkgfile),
        file: {
            path: pkgfile,
            text: content,
        },
    };
}
export async function isFile(host, path) {
    try {
        const stats = await host.stat(path);
        return stats.isFile();
    }
    catch (e) {
        if (e.code === "ENOENT" || e.code === "ENOTDIR") {
            return false;
        }
        throw e;
    }
}
export function pathToFileURL(path) {
    return `file://${path}`;
}
export function fileURLToPath(url) {
    if (!url.startsWith("file://"))
        throw new Error("Cannot convert non file: URL to path");
    const pathname = url.slice("file://".length);
    for (let n = 0; n < pathname.length; n++) {
        if (pathname[n] === "%") {
            const third = pathname.codePointAt(n + 2) | 0x20;
            if (pathname[n + 1] === "2" && third === 102) {
                throw new Error("Invalid url to path: must not include encoded / characters");
            }
        }
    }
    return decodeURIComponent(pathname);
}
/**
 * Returns a list of all the parent directory and the given one.
 */
export function listDirHierarchy(baseDir) {
    const paths = [baseDir];
    let current = getDirectoryPath(baseDir);
    while (current !== paths[paths.length - 1]) {
        paths.push(current);
        current = getDirectoryPath(current);
    }
    return paths;
}
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