“use strict”;

Object.defineProperty(exports, “__esModule”, {

value: true

}); exports.declare = declare;

function declare(builder) {

return (api, options, dirname) => {
  if (!api.assertVersion) {
    api = Object.assign(copyApiObject(api), {
      assertVersion(range) {
        throwVersionError(range, api.version);
      }

    });
  }

  return builder(api, options || {}, dirname);
};

}

function copyApiObject(api) {

let proto = null;

if (typeof api.version === "string" && /^7\./.test(api.version)) {
  proto = Object.getPrototypeOf(api);

  if (proto && (!has(proto, "version") || !has(proto, "transform") || !has(proto, "template") || !has(proto, "types"))) {
    proto = null;
  }
}

return Object.assign({}, proto, api);

}

function has(obj, key) {

return Object.prototype.hasOwnProperty.call(obj, key);

}

function throwVersionError(range, version) {

if (typeof range === "number") {
  if (!Number.isInteger(range)) {
    throw new Error("Expected string or integer value.");
  }

  range = `^${range}.0.0-0`;
}

if (typeof range !== "string") {
  throw new Error("Expected string or integer value.");
}

const limit = Error.stackTraceLimit;

if (typeof limit === "number" && limit < 25) {
  Error.stackTraceLimit = 25;
}

let err;

if (version.slice(0, 2) === "7.") {
  err = new Error(`Requires Babel "^7.0.0-beta.41", but was loaded with "${version}". ` + `You'll need to update your @babel/core version.`);
} else {
  err = new Error(`Requires Babel "${range}", but was loaded with "${version}". ` + `If you are sure you have a compatible version of @babel/core, ` + `it is likely that something in your build process is loading the ` + `wrong version. Inspect the stack trace of this error to look for ` + `the first entry that doesn't mention "@babel/core" or "babel-core" ` + `to see what is calling Babel.`);
}

if (typeof limit === "number") {
  Error.stackTraceLimit = limit;
}

throw Object.assign(err, {
  code: "BABEL_VERSION_UNSUPPORTED",
  version,
  range
});

}