angular-datatables
Version:
Angular directive for DataTables
70 lines • 2.89 kB
JavaScript
;
/**
* @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
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.hasNgModuleImport = hasNgModuleImport;
var ts = require("typescript");
/**
* Whether the Angular module in the given path imports the specifed module class name.
*/
function hasNgModuleImport(tree, modulePath, className) {
var moduleFileContent = tree.read(modulePath);
if (!moduleFileContent) {
throw new Error("Could not read Angular module file: ".concat(modulePath));
}
var parsedFile = ts.createSourceFile(modulePath, moduleFileContent.toString(), ts.ScriptTarget.Latest, true);
var ngModuleMetadata = null;
var findModuleDecorator = function (node) {
if (ts.isDecorator(node) && ts.isCallExpression(node.expression) &&
isNgModuleCallExpression(node.expression)) {
ngModuleMetadata = node.expression.arguments[0];
return;
}
ts.forEachChild(node, findModuleDecorator);
};
ts.forEachChild(parsedFile, findModuleDecorator);
if (!ngModuleMetadata) {
throw new Error("Could not find NgModule declaration inside: \"".concat(modulePath, "\""));
}
/* tslint:disable-next-line: no-non-null-assertion */
for (var _i = 0, _a = ngModuleMetadata.properties; _i < _a.length; _i++) {
var property = _a[_i];
if (!ts.isPropertyAssignment(property) || property.name.getText() !== 'imports' ||
!ts.isArrayLiteralExpression(property.initializer)) {
continue;
}
/* tslint:disable-next-line: no-any */
if (property.initializer.elements.some(function (element) { return element.getText() === className; })) {
return true;
}
}
return false;
}
/**
* Resolves the last identifier that is part of the given expression. This helps resolving
* identifiers of nested property access expressions (e.g. myNamespace.core.NgModule).
*/
function resolveIdentifierOfExpression(expression) {
if (ts.isIdentifier(expression)) {
return expression;
}
else if (ts.isPropertyAccessExpression(expression)) {
return resolveIdentifierOfExpression(expression.expression);
}
return null;
}
/** Whether the specified call expression is referring to a NgModule definition. */
function isNgModuleCallExpression(callExpression) {
if (!callExpression.arguments.length ||
!ts.isObjectLiteralExpression(callExpression.arguments[0])) {
return false;
}
var decoratorIdentifier = resolveIdentifierOfExpression(callExpression.expression);
return decoratorIdentifier ? decoratorIdentifier.text === 'NgModule' : false;
}
//# sourceMappingURL=ng-module-imports.js.map