source: trip-planner-front/node_modules/@angular/compiler-cli/ngcc/src/dependencies/umd_dependency_host.js

(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/ngcc/src/dependencies/umd_dependency_host", ["require", "exports", "tslib", "typescript", "@angular/compiler-cli/ngcc/src/host/umd_host", "@angular/compiler-cli/ngcc/src/dependencies/commonjs_dependency_host", "@angular/compiler-cli/ngcc/src/dependencies/dependency_host"], factory);
    }
})(function (require, exports) {
    "use strict";
    Object.defineProperty(exports, "__esModule", { value: true });
    exports.UmdDependencyHost = void 0;
    var tslib_1 = require("tslib");
    /**
     * @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 umd_host_1 = require("@angular/compiler-cli/ngcc/src/host/umd_host");
    var commonjs_dependency_host_1 = require("@angular/compiler-cli/ngcc/src/dependencies/commonjs_dependency_host");
    var dependency_host_1 = require("@angular/compiler-cli/ngcc/src/dependencies/dependency_host");
    /**
     * Helper functions for computing dependencies.
     */
    var UmdDependencyHost = /** @class */ (function (_super) {
        tslib_1.__extends(UmdDependencyHost, _super);
        function UmdDependencyHost() {
            return _super !== null && _super.apply(this, arguments) || this;
        }
        UmdDependencyHost.prototype.canSkipFile = function (fileContents) {
            return !commonjs_dependency_host_1.hasRequireCalls(fileContents);
        };
        UmdDependencyHost.prototype.extractImports = function (file, fileContents) {
            // Parse the source into a TypeScript AST and then walk it looking for imports and re-exports.
            var sf = ts.createSourceFile(file, fileContents, ts.ScriptTarget.ES2015, false, ts.ScriptKind.JS);
            if (sf.statements.length !== 1) {
                return new Set();
            }
            var umdModule = umd_host_1.parseStatementForUmdModule(sf.statements[0]);
            var umdImports = umdModule && umd_host_1.getImportsOfUmdModule(umdModule);
            if (umdImports === null) {
                return new Set();
            }
            return new Set(umdImports.map(function (i) { return i.path; }));
        };
        return UmdDependencyHost;
    }(dependency_host_1.DependencyHostBase));
    exports.UmdDependencyHost = UmdDependencyHost;
});
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