(function (factory) {
    if (typeof module === "object" && typeof module.exports === "object") {
        var v = factory(require, exports);
        if (v !== undefined) module.exports = v;
    }
    else if (typeof define === "function" && define.amd) {
        define("@angular/compiler-cli/src/typescript_support", ["require", "exports", "typescript", "@angular/compiler-cli/src/diagnostics/typescript_version"], factory);
    }
})(function (require, exports) {
    "use strict";
    Object.defineProperty(exports, "__esModule", { value: true });
    exports.verifySupportedTypeScriptVersion = exports.checkVersion = exports.restoreTypeScriptVersionForTesting = exports.setTypeScriptVersionForTesting = void 0;
    /**
     * @license
     * Copyright Google LLC All Rights Reserved.
     *
     * Use of this source code is governed by an MIT-style license that can be
     * found in the LICENSE file at https://angular.io/license
     */
    var ts = require("typescript");
    var typescript_version_1 = require("@angular/compiler-cli/src/diagnostics/typescript_version");
    /**
     * Minimum supported TypeScript version
     * ∀ supported typescript version v, v >= MIN_TS_VERSION
     *
     * Note: this check is disabled in g3, search for
     * `angularCompilerOptions.disableTypeScriptVersionCheck` config param value in g3.
     */
    var MIN_TS_VERSION = '4.2.3';
    /**
     * Supremum of supported TypeScript versions
     * ∀ supported typescript version v, v < MAX_TS_VERSION
     * MAX_TS_VERSION is not considered as a supported TypeScript version
     *
     * Note: this check is disabled in g3, search for
     * `angularCompilerOptions.disableTypeScriptVersionCheck` config param value in g3.
     */
    var MAX_TS_VERSION = '4.4.0';
    /**
     * The currently used version of TypeScript, which can be adjusted for testing purposes using
     * `setTypeScriptVersionForTesting` and `restoreTypeScriptVersionForTesting` below.
     */
    var tsVersion = ts.version;
    function setTypeScriptVersionForTesting(version) {
        tsVersion = version;
    }
    exports.setTypeScriptVersionForTesting = setTypeScriptVersionForTesting;
    function restoreTypeScriptVersionForTesting() {
        tsVersion = ts.version;
    }
    exports.restoreTypeScriptVersionForTesting = restoreTypeScriptVersionForTesting;
    /**
     * Checks whether a given version ∈ [minVersion, maxVersion[.
     * An error will be thrown when the given version ∉ [minVersion, maxVersion[.
     *
     * @param version The version on which the check will be performed
     * @param minVersion The lower bound version. A valid version needs to be greater than minVersion
     * @param maxVersion The upper bound version. A valid version needs to be strictly less than
     * maxVersion
     *
     * @throws Will throw an error if the given version ∉ [minVersion, maxVersion[
     */
    function checkVersion(version, minVersion, maxVersion) {
        if ((typescript_version_1.compareVersions(version, minVersion) < 0 || typescript_version_1.compareVersions(version, maxVersion) >= 0)) {
            throw new Error("The Angular Compiler requires TypeScript >=" + minVersion + " and <" + maxVersion + " but " + version + " was found instead.");
        }
    }
    exports.checkVersion = checkVersion;
    function verifySupportedTypeScriptVersion() {
        checkVersion(tsVersion, MIN_TS_VERSION, MAX_TS_VERSION);
    }
    exports.verifySupportedTypeScriptVersion = verifySupportedTypeScriptVersion;
});
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