dependency-cruiser/src/extract/transpile/try-import-available.mjs

Validate and visualize dependencies. With your rules. JavaScript, TypeScript, CoffeeScript. ES6, CommonJS, AMD.

import path from "node:path/posix";
import { createRequire } from "node:module";
import { coerce, satisfies } from "semver";

const require = createRequire(import.meta.url);

const PACKAGE_RE = "[^/]+";
const SCOPED_PACKAGE_RE = "@[^/]+(/[^/]+)";
const ROOT_MODULE_RE = new RegExp(`^(${SCOPED_PACKAGE_RE}|${PACKAGE_RE})`, "g");

function extractRootModuleName(pModuleName) {
  return (pModuleName.match(ROOT_MODULE_RE) || []).shift();
}

function getVersion(pModuleName) {
  // of course we'd love to use something like an import with an import assertion
  // (yo, you're import-ing 'json'!), but that's _experimental_, printing scary
  // messages to stderr so: ¯\_(ツ)_/¯
  // eslint-disable-next-line import/no-dynamic-require, security/detect-non-literal-require
  const lManifest = require(path.join(
    extractRootModuleName(pModuleName),
    "package.json"
  ));
  return lManifest.version;
}

export default function tryImportAvailable(pModuleName, pSemanticVersion) {
  try {
    if (pSemanticVersion) {
      const lVersion = getVersion(pModuleName);
      const lCoerced = coerce(lVersion);
      if (
        lVersion &&
        lCoerced &&
        !satisfies(lCoerced.version, pSemanticVersion)
      ) {
        return false;
      }
    }
    // of course we'd love to use something like import.meta.resolve, but
    // that's _experimental_, so ¯\_(ツ)_/¯
    return Boolean(require.resolve(pModuleName));
  } catch (pError) {
    return false;
  }
}