ducha-qianduan/node_modules/@babel/helper-define-polyfill-provider/lib/node/dependencies.js

"use strict";

exports.__esModule = true;
exports.resolve = resolve;
exports.has = has;
exports.logMissing = logMissing;
exports.laterLogMissing = laterLogMissing;

var _path = _interopRequireDefault(require("path"));

var _lodash = _interopRequireDefault(require("lodash.debounce"));

var _resolve = _interopRequireDefault(require("resolve"));

var _module = require("module");

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

const nativeRequireResolve = parseFloat(process.versions.node) >= 8.9; // $FlowIgnore

// eslint-disable-line
function resolve(dirname, moduleName, absoluteImports) {
  if (absoluteImports === false) return moduleName;
  let basedir = dirname;

  if (typeof absoluteImports === "string") {
    basedir = _path.default.resolve(basedir, absoluteImports);
  }

  try {
    if (nativeRequireResolve) {
      return require.resolve(moduleName, {
        paths: [basedir]
      });
    } else {
      return _resolve.default.sync(moduleName, {
        basedir
      });
    }
  } catch (err) {
    if (err.code !== "MODULE_NOT_FOUND") throw err; // $FlowIgnore

    throw Object.assign(new Error(`Failed to resolve "${moduleName}" relative to "${dirname}"`), {
      code: "BABEL_POLYFILL_NOT_FOUND",
      polyfill: moduleName,
      dirname
    });
  }
}

function has(basedir, name) {
  try {
    if (nativeRequireResolve) {
      require.resolve(name, {
        paths: [basedir]
      });
    } else {
      _resolve.default.sync(name, {
        basedir
      });
    }

    return true;
  } catch (_unused) {
    return false;
  }
}

function logMissing(missingDeps) {
  if (missingDeps.size === 0) return;
  const deps = Array.from(missingDeps).sort().join(" ");
  console.warn("\nSome polyfills have been added but are not present in your dependencies.\n" + "Please run one of the following commands:\n" + `\tnpm install --save ${deps}\n` + `\tyarn add ${deps}\n`);
  process.exitCode = 1;
}

let allMissingDeps = new Set();
const laterLogMissingDependencies = (0, _lodash.default)(() => {
  logMissing(allMissingDeps);
  allMissingDeps = new Set();
}, 100);

function laterLogMissing(missingDeps) {
  if (missingDeps.size === 0) return;
  missingDeps.forEach(name => allMissingDeps.add(name));
  laterLogMissingDependencies();
}