@syncfusion/ej2-angular-base
Version:
A common package of Essential JS 2 base Angular libraries, methods and class definitions
801 lines (800 loc) • 31.5 kB
JavaScript
;
/**
* @license
* Copyright Google Inc. 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 });
const core_1 = require("@angular-devkit/core");
const schematics_1 = require("@angular-devkit/schematics");
const ts = require("typescript");
const path_1 = require("path");
const MODULE_EXT = '.module.ts';
const ROUTING_MODULE_EXT = '-routing.module.ts';
/**
* Find the module referred by a set of options passed to the schematics.
*/
function findModuleFromOptions(host, options) {
if (options.hasOwnProperty('skipImport') && options.skipImport) {
return undefined;
}
const moduleExt = options.moduleExt || MODULE_EXT;
const routingModuleExt = options.routingModuleExt || ROUTING_MODULE_EXT;
if (!options.module) {
const pathToCheck = (options.path || '')
+ (options.flat ? '' : '/' + core_1.strings.dasherize(options.name));
return core_1.normalize(findModule(host, pathToCheck, moduleExt, routingModuleExt));
}
else {
const modulePath = core_1.normalize(`/${options.path}/${options.module}`);
const componentPath = core_1.normalize(`/${options.path}/${options.name}`);
const moduleBaseName = core_1.normalize(modulePath).split('/').pop();
const candidateSet = new Set([
core_1.normalize(options.path || '/'),
]);
for (let dir = modulePath; dir != core_1.NormalizedRoot; dir = core_1.dirname(dir)) {
candidateSet.add(dir);
}
for (let dir = componentPath; dir != core_1.NormalizedRoot; dir = core_1.dirname(dir)) {
candidateSet.add(dir);
}
const candidatesDirs = [...candidateSet].sort((a, b) => b.length - a.length);
for (const c of candidatesDirs) {
const candidateFiles = [
'',
`${moduleBaseName}.ts`,
`${moduleBaseName}${moduleExt}`,
].map(x => core_1.join(c, x));
for (const sc of candidateFiles) {
if (host.exists(sc)) {
return core_1.normalize(sc);
}
}
}
throw new Error(`Specified module '${options.module}' does not exist.\n`
+ `Looked in the following directories:\n ${candidatesDirs.join('\n ')}`);
}
}
exports.findModuleFromOptions = findModuleFromOptions;
/**
* Function to find the "closest" module to a generated file's path.
*/
function findModule(host, generateDir, moduleExt = MODULE_EXT, routingModuleExt = ROUTING_MODULE_EXT) {
let dir = host.getDir('/' + generateDir);
let foundRoutingModule = false;
while (dir) {
const allMatches = dir.subfiles.filter(p => p.endsWith(moduleExt));
const filteredMatches = allMatches.filter(p => !p.endsWith(routingModuleExt));
foundRoutingModule = foundRoutingModule || allMatches.length !== filteredMatches.length;
if (filteredMatches.length == 1) {
return core_1.join(dir.path, filteredMatches[0]);
}
else if (filteredMatches.length > 1) {
throw new Error('More than one module matches. Use skip-import option to skip importing '
+ 'the component into the closest module.');
}
dir = dir.parent;
}
const errorMsg = foundRoutingModule ? 'Could not find a non Routing NgModule.'
+ `\nModules with suffix '${routingModuleExt}' are strictly reserved for routing.`
+ '\nUse the skip-import option to skip importing in NgModule.'
: 'Could not find an NgModule. Use the skip-import option to skip importing in NgModule.';
throw new Error(errorMsg);
}
exports.findModule = findModule;
/**
* Build a relative path from one file path to another file path.
*/
function buildRelativePath(from, to) {
from = core_1.normalize(from);
to = core_1.normalize(to);
// Convert to arrays.
const fromParts = from.split('/');
const toParts = to.split('/');
// Remove file names (preserving destination)
fromParts.pop();
const toFileName = toParts.pop();
const relativePath = core_1.relative(core_1.normalize(fromParts.join('/')), core_1.normalize(toParts.join('/')));
let pathPrefix = '';
// Set the path prefix for same dir or child dir, parent dir starts with `..`
if (!relativePath) {
pathPrefix = '.';
}
else if (!relativePath.startsWith('.')) {
pathPrefix = `./`;
}
if (pathPrefix && !pathPrefix.endsWith('/')) {
pathPrefix += '/';
}
return pathPrefix + (relativePath ? relativePath + '/' : '') + toFileName;
}
exports.buildRelativePath = buildRelativePath;
exports.ANGULAR_CLI_WORKSPACE_PATH = '/angular.json';
/** Gets the Angular CLI workspace config (angular.json) */
function getWorkspace(host) {
const configBuffer = host.read(exports.ANGULAR_CLI_WORKSPACE_PATH);
if (configBuffer === null) {
throw new schematics_1.SchematicsException('Could not find angular.json');
}
return JSON.parse(configBuffer.toString());
}
exports.getWorkspace = getWorkspace;
/**
* Gets a project from the Angular CLI workspace. If no project name is given, the first project
* will be retrieved.
*/
function getProjectFromWorkspace(config, projectName) {
if (config.projects) {
if (projectName) {
const project = config.projects[projectName];
if (!project) {
throw new schematics_1.SchematicsException(`No project named "${projectName}" exists.`);
}
Object.defineProperty(project, 'name', { enumerable: false, value: projectName });
return project;
}
// If there is exactly one non-e2e project, use that. Otherwise, require that a specific
// project be specified.
const allProjectNames = Object.keys(config.projects).filter(p => !p.includes('e2e'));
if (allProjectNames.length === 1) {
const project = config.projects[allProjectNames[0]];
// Set a non-enumerable project name to the project. We need the name for schematics
// later on, but don't want to write it back out to the config file.
Object.defineProperty(project, 'name', { enumerable: false, value: projectName });
return project;
}
else {
throw new schematics_1.SchematicsException('Multiple projects are defined; please specify a project name');
}
}
throw new schematics_1.SchematicsException('No projects are defined');
}
exports.getProjectFromWorkspace = getProjectFromWorkspace;
/**
* An operation that does nothing.
*/
class NoopChange {
constructor() {
this.description = 'No operation.';
this.order = Infinity;
this.path = null;
}
apply() { return Promise.resolve(); }
}
exports.NoopChange = NoopChange;
/**
* Will add text to the source code.
*/
class InsertChange {
constructor(path, pos, toAdd) {
this.path = path;
this.pos = pos;
this.toAdd = toAdd;
if (pos < 0) {
throw new Error('Negative positions are invalid');
}
this.description = `Inserted ${toAdd} into position ${pos} of ${path}`;
this.order = pos;
}
/**
* This method does not insert spaces if there is none in the original string.
*/
apply(host) {
return host.read(this.path).then(content => {
const prefix = content.substring(0, this.pos);
const suffix = content.substring(this.pos);
return host.write(this.path, `${prefix}${this.toAdd}${suffix}`);
});
}
}
exports.InsertChange = InsertChange;
/**
* Will remove text from the source code.
*/
class RemoveChange {
constructor(path, pos, toRemove) {
this.path = path;
this.pos = pos;
this.toRemove = toRemove;
if (pos < 0) {
throw new Error('Negative positions are invalid');
}
this.description = `Removed ${toRemove} into position ${pos} of ${path}`;
this.order = pos;
}
apply(host) {
return host.read(this.path).then(content => {
const prefix = content.substring(0, this.pos);
const suffix = content.substring(this.pos + this.toRemove.length);
// TODO: throw error if toRemove doesn't match removed string.
return host.write(this.path, `${prefix}${suffix}`);
});
}
}
exports.RemoveChange = RemoveChange;
/**
* Will replace text from the source code.
*/
class ReplaceChange {
constructor(path, pos, oldText, newText) {
this.path = path;
this.pos = pos;
this.oldText = oldText;
this.newText = newText;
if (pos < 0) {
throw new Error('Negative positions are invalid');
}
this.description = `Replaced ${oldText} into position ${pos} of ${path} with ${newText}`;
this.order = pos;
}
apply(host) {
return host.read(this.path).then(content => {
const prefix = content.substring(0, this.pos);
const suffix = content.substring(this.pos + this.oldText.length);
const text = content.substring(this.pos, this.pos + this.oldText.length);
if (text !== this.oldText) {
return Promise.reject(new Error(`Invalid replace: "${text}" != "${this.oldText}".`));
}
// TODO: throw error if oldText doesn't match removed string.
return host.write(this.path, `${prefix}${this.newText}${suffix}`);
});
}
}
exports.ReplaceChange = ReplaceChange;
/**
* Find all nodes from the AST in the subtree of node of SyntaxKind kind.
* @param node
* @param kind
* @param max The maximum number of items to return.
* @return all nodes of kind, or [] if none is found
*/
function findNodes(node, kind, max = Infinity) {
if (!node || max == 0) {
return [];
}
const arr = [];
if (node.kind === kind) {
arr.push(node);
max--;
}
if (max > 0) {
for (const child of node.getChildren()) {
findNodes(child, kind, max).forEach(node => {
if (max > 0) {
arr.push(node);
}
max--;
});
if (max <= 0) {
break;
}
}
}
return arr;
}
exports.findNodes = findNodes;
/**
* Get all the nodes from a source.
* @param sourceFile The source file object.
* @returns {Observable<ts.Node>} An observable of all the nodes in the source.
*/
function getSourceNodes(sourceFile) {
const nodes = [sourceFile];
const result = [];
while (nodes.length > 0) {
const node = nodes.shift();
if (node) {
result.push(node);
if (node.getChildCount(sourceFile) >= 0) {
nodes.unshift(...node.getChildren());
}
}
}
return result;
}
exports.getSourceNodes = getSourceNodes;
function findNode(node, kind, text) {
if (node.kind === kind && node.getText() === text) {
// throw new Error(node.getText());
return node;
}
let foundNode = null;
ts.forEachChild(node, childNode => {
foundNode = foundNode || findNode(childNode, kind, text);
});
return foundNode;
}
exports.findNode = findNode;
/**
* Helper for sorting nodes.
* @return function to sort nodes in increasing order of position in sourceFile
*/
function nodesByPosition(first, second) {
return first.getStart() - second.getStart();
}
/**
* Insert `toInsert` after the last occurence of `ts.SyntaxKind[nodes[i].kind]`
* or after the last of occurence of `syntaxKind` if the last occurence is a sub child
* of ts.SyntaxKind[nodes[i].kind] and save the changes in file.
*
* @param nodes insert after the last occurence of nodes
* @param toInsert string to insert
* @param file file to insert changes into
* @param fallbackPos position to insert if toInsert happens to be the first occurence
* @param syntaxKind the ts.SyntaxKind of the subchildren to insert after
* @return Change instance
* @throw Error if toInsert is first occurence but fall back is not set
*/
function insertAfterLastOccurrence(nodes, toInsert, file, fallbackPos, syntaxKind) {
let lastItem = nodes.sort(nodesByPosition).pop();
if (!lastItem) {
throw new Error();
}
if (syntaxKind) {
lastItem = findNodes(lastItem, syntaxKind).sort(nodesByPosition).pop();
}
if (!lastItem && fallbackPos == undefined) {
throw new Error(`tried to insert ${toInsert} as first occurence with no fallback position`);
}
const lastItemPosition = lastItem ? lastItem.getEnd() : fallbackPos;
return new InsertChange(file, lastItemPosition, toInsert);
}
exports.insertAfterLastOccurrence = insertAfterLastOccurrence;
function getContentOfKeyLiteral(_source, node) {
if (node.kind == ts.SyntaxKind.Identifier) {
return node.text;
}
else if (node.kind == ts.SyntaxKind.StringLiteral) {
return node.text;
}
else {
return null;
}
}
exports.getContentOfKeyLiteral = getContentOfKeyLiteral;
function _angularImportsFromNode(node, _sourceFile) {
const ms = node.moduleSpecifier;
let modulePath;
switch (ms.kind) {
case ts.SyntaxKind.StringLiteral:
modulePath = ms.text;
break;
default:
return {};
}
if (!modulePath.startsWith('@angular/')) {
return {};
}
if (node.importClause) {
if (node.importClause.name) {
// This is of the form `import Name from 'path'`. Ignore.
return {};
}
else if (node.importClause.namedBindings) {
const nb = node.importClause.namedBindings;
if (nb.kind == ts.SyntaxKind.NamespaceImport) {
// This is of the form `import * as name from 'path'`. Return `name.`.
return {
[nb.name.text + '.']: modulePath,
};
}
else {
// This is of the form `import {a,b,c} from 'path'`
const namedImports = nb;
return namedImports.elements
.map((is) => is.propertyName ? is.propertyName.text : is.name.text)
.reduce((acc, curr) => {
acc[curr] = modulePath;
return acc;
}, {});
}
}
return {};
}
else {
// This is of the form `import 'path';`. Nothing to do.
return {};
}
}
function getDecoratorMetadata(source, identifier, module) {
const angularImports = findNodes(source, ts.SyntaxKind.ImportDeclaration)
.map((node) => _angularImportsFromNode(node, source))
.reduce((acc, current) => {
for (const key of Object.keys(current)) {
acc[key] = current[key];
}
return acc;
}, {});
return getSourceNodes(source)
.filter(node => {
return node.kind == ts.SyntaxKind.Decorator
&& node.expression.kind == ts.SyntaxKind.CallExpression;
})
.map(node => node.expression)
.filter(expr => {
if (expr.expression.kind == ts.SyntaxKind.Identifier) {
const id = expr.expression;
return id.getFullText(source) == identifier
&& angularImports[id.getFullText(source)] === module;
}
else if (expr.expression.kind == ts.SyntaxKind.PropertyAccessExpression) {
// This covers foo.NgModule when importing * as foo.
const paExpr = expr.expression;
// If the left expression is not an identifier, just give up at that point.
if (paExpr.expression.kind !== ts.SyntaxKind.Identifier) {
return false;
}
const id = paExpr.name.text;
const moduleId = paExpr.expression.getText(source);
return id === identifier && (angularImports[moduleId + '.'] === module);
}
return false;
})
.filter(expr => expr.arguments[0]
&& expr.arguments[0].kind == ts.SyntaxKind.ObjectLiteralExpression)
.map(expr => expr.arguments[0]);
}
exports.getDecoratorMetadata = getDecoratorMetadata;
function findClassDeclarationParent(node) {
if (ts.isClassDeclaration(node)) {
return node;
}
return node.parent && findClassDeclarationParent(node.parent);
}
/**
* Given a source file with @NgModule class(es), find the name of the first @NgModule class.
*
* @param source source file containing one or more @NgModule
* @returns the name of the first @NgModule, or `undefined` if none is found
*/
function getFirstNgModuleName(source) {
// First, find the @NgModule decorators.
const ngModulesMetadata = getDecoratorMetadata(source, 'NgModule', '@angular/core');
if (ngModulesMetadata.length === 0) {
return undefined;
}
// Then walk parent pointers up the AST, looking for the ClassDeclaration parent of the NgModule
// metadata.
const moduleClass = findClassDeclarationParent(ngModulesMetadata[0]);
if (!moduleClass || !moduleClass.name) {
return undefined;
}
// Get the class name of the module ClassDeclaration.
return moduleClass.name.text;
}
exports.getFirstNgModuleName = getFirstNgModuleName;
function addSymbolToNgModuleMetadata(source, ngModulePath, metadataField, symbolName, importPath = null) {
const nodes = getDecoratorMetadata(source, 'NgModule', '@angular/core');
let node = nodes[0]; // tslint:disable-line:no-any
// Find the decorator declaration.
if (!node) {
return [];
}
// Get all the children property assignment of object literals.
const matchingProperties = node.properties
.filter(prop => prop.kind == ts.SyntaxKind.PropertyAssignment)
// Filter out every fields that's not "metadataField". Also handles string literals
// (but not expressions).
.filter((prop) => {
const name = prop.name;
switch (name.kind) {
case ts.SyntaxKind.Identifier:
return name.getText(source) == metadataField;
case ts.SyntaxKind.StringLiteral:
return name.text == metadataField;
}
return false;
});
// Get the last node of the array literal.
if (!matchingProperties) {
return [];
}
if (matchingProperties.length == 0) {
// We haven't found the field in the metadata declaration. Insert a new field.
const expr = node;
let position;
let toInsert;
if (expr.properties.length == 0) {
position = expr.getEnd() - 1;
toInsert = ` ${metadataField}: [${symbolName}]\n`;
}
else {
node = expr.properties[expr.properties.length - 1];
position = node.getEnd();
// Get the indentation of the last element, if any.
const text = node.getFullText(source);
const matches = text.match(/^\r?\n\s*/);
if (matches.length > 0) {
toInsert = `,${matches[0]}${metadataField}: [${symbolName}]`;
}
else {
toInsert = `, ${metadataField}: [${symbolName}]`;
}
}
if (importPath !== null) {
return [
new InsertChange(ngModulePath, position, toInsert),
insertImport(source, ngModulePath, symbolName.replace(/\..*$/, ''), importPath),
];
}
else {
return [new InsertChange(ngModulePath, position, toInsert)];
}
}
const assignment = matchingProperties[0];
// If it's not an array, nothing we can do really.
if (assignment.initializer.kind !== ts.SyntaxKind.ArrayLiteralExpression) {
return [];
}
const arrLiteral = assignment.initializer;
if (arrLiteral.elements.length == 0) {
// Forward the property.
node = arrLiteral;
}
else {
node = arrLiteral.elements;
}
if (!node) {
console.error('No app module found. Please add your new class to your component.');
return [];
}
if (Array.isArray(node)) {
const nodeArray = node;
const symbolsArray = nodeArray.map(node => node.getText());
if (symbolsArray.includes(symbolName)) {
return [];
}
node = node[node.length - 1];
}
let toInsert;
let position = node.getEnd();
if (node.kind == ts.SyntaxKind.ObjectLiteralExpression) {
// We haven't found the field in the metadata declaration. Insert a new
// field.
const expr = node;
if (expr.properties.length == 0) {
position = expr.getEnd() - 1;
toInsert = ` ${metadataField}: [${symbolName}]\n`;
}
else {
node = expr.properties[expr.properties.length - 1];
position = node.getEnd();
// Get the indentation of the last element, if any.
const text = node.getFullText(source);
if (text.match('^\r?\r?\n')) {
toInsert = `,${text.match(/^\r?\n\s+/)[0]}${metadataField}: [${symbolName}]`;
}
else {
toInsert = `, ${metadataField}: [${symbolName}]`;
}
}
}
else if (node.kind == ts.SyntaxKind.ArrayLiteralExpression) {
// We found the field but it's empty. Insert it just before the `]`.
position--;
toInsert = `${symbolName}`;
}
else {
// Get the indentation of the last element, if any.
const text = node.getFullText(source);
if (text.match(/^\r?\n/)) {
toInsert = `,${text.match(/^\r?\n(\r?)\s+/)[0]}${symbolName}`;
}
else {
toInsert = `, ${symbolName}`;
}
}
if (importPath !== null) {
return [
new InsertChange(ngModulePath, position, toInsert),
insertImport(source, ngModulePath, symbolName.replace(/\..*$/, ''), importPath),
];
}
return [new InsertChange(ngModulePath, position, toInsert)];
}
exports.addSymbolToNgModuleMetadata = addSymbolToNgModuleMetadata;
/**
* Custom function to insert a declaration (component, pipe, directive)
* into NgModule declarations. It also imports the component.
*/
function addDeclarationToModule(source, modulePath, classifiedName, importPath) {
return addSymbolToNgModuleMetadata(source, modulePath, 'declarations', classifiedName, importPath);
}
exports.addDeclarationToModule = addDeclarationToModule;
/**
* Custom function to insert an NgModule into NgModule imports. It also imports the module.
*/
function addImportToModule(source, modulePath, classifiedName, importPath) {
return addSymbolToNgModuleMetadata(source, modulePath, 'imports', classifiedName, importPath);
}
exports.addImportToModule = addImportToModule;
/**
* Custom function to insert a provider into NgModule. It also imports it.
*/
function addProviderToModule(source, modulePath, classifiedName, importPath) {
return addSymbolToNgModuleMetadata(source, modulePath, 'providers', classifiedName, importPath);
}
exports.addProviderToModule = addProviderToModule;
/**
* Custom function to insert an export into NgModule. It also imports it.
*/
function addExportToModule(source, modulePath, classifiedName, importPath) {
return addSymbolToNgModuleMetadata(source, modulePath, 'exports', classifiedName, importPath);
}
exports.addExportToModule = addExportToModule;
/**
* Custom function to insert an export into NgModule. It also imports it.
*/
function addBootstrapToModule(source, modulePath, classifiedName, importPath) {
return addSymbolToNgModuleMetadata(source, modulePath, 'bootstrap', classifiedName, importPath);
}
exports.addBootstrapToModule = addBootstrapToModule;
/**
* Determine if an import already exists.
*/
function isImported(source, classifiedName, importPath) {
const allNodes = getSourceNodes(source);
const matchingNodes = allNodes
.filter(node => node.kind === ts.SyntaxKind.ImportDeclaration)
.filter((imp) => imp.moduleSpecifier.kind === ts.SyntaxKind.StringLiteral)
.filter((imp) => {
return imp.moduleSpecifier.text === importPath;
})
.filter((imp) => {
if (!imp.importClause) {
return false;
}
const nodes = findNodes(imp.importClause, ts.SyntaxKind.ImportSpecifier)
.filter(n => n.getText() === classifiedName);
return nodes.length > 0;
});
return matchingNodes.length > 0;
}
exports.isImported = isImported;
function findBootstrapModuleCall(host, mainPath) {
const mainBuffer = host.read(mainPath);
if (!mainBuffer) {
throw new schematics_1.SchematicsException(`Main file (${mainPath}) not found`);
}
const mainText = mainBuffer.toString('utf-8');
const source = ts.createSourceFile(mainPath, mainText, ts.ScriptTarget.Latest, true);
const allNodes = getSourceNodes(source);
let bootstrapCall = null;
for (const node of allNodes) {
let bootstrapCallNode = null;
bootstrapCallNode = findNode(node, ts.SyntaxKind.Identifier, 'bootstrapModule');
// Walk up the parent until CallExpression is found.
while (bootstrapCallNode && bootstrapCallNode.parent
&& bootstrapCallNode.parent.kind !== ts.SyntaxKind.CallExpression) {
bootstrapCallNode = bootstrapCallNode.parent;
}
if (bootstrapCallNode !== null &&
bootstrapCallNode.parent !== undefined &&
bootstrapCallNode.parent.kind === ts.SyntaxKind.CallExpression) {
bootstrapCall = bootstrapCallNode.parent;
break;
}
}
return bootstrapCall;
}
exports.findBootstrapModuleCall = findBootstrapModuleCall;
function findBootstrapModulePath(host, mainPath) {
const bootstrapCall = findBootstrapModuleCall(host, mainPath);
if (!bootstrapCall) {
throw new schematics_1.SchematicsException('Bootstrap call not found');
}
const bootstrapModule = bootstrapCall.arguments[0];
const mainBuffer = host.read(mainPath);
if (!mainBuffer) {
throw new schematics_1.SchematicsException(`Client app main file (${mainPath}) not found`);
}
const mainText = mainBuffer.toString('utf-8');
const source = ts.createSourceFile(mainPath, mainText, ts.ScriptTarget.Latest, true);
const allNodes = getSourceNodes(source);
const bootstrapModuleRelativePath = allNodes
.filter(node => node.kind === ts.SyntaxKind.ImportDeclaration)
.filter(imp => {
return findNode(imp, ts.SyntaxKind.Identifier, bootstrapModule.getText());
})
.map((imp) => {
const modulePathStringLiteral = imp.moduleSpecifier;
return modulePathStringLiteral.text;
})[0];
return bootstrapModuleRelativePath;
}
exports.findBootstrapModulePath = findBootstrapModulePath;
function getAppModulePath(host, mainPath) {
const moduleRelativePath = findBootstrapModulePath(host, mainPath);
const mainDir = path_1.dirname(mainPath);
const modulePath = core_1.normalize(`/${mainDir}/${moduleRelativePath}.ts`);
return modulePath;
}
exports.getAppModulePath = getAppModulePath;
function parseName(path, name) {
const nameWithoutPath = core_1.basename(name);
const namePath = core_1.dirname((path + '/' + name));
return {
name: nameWithoutPath,
path: core_1.normalize('/' + namePath),
};
}
exports.parseName = parseName;
/**
* Add Import `import { symbolName } from fileName` if the import doesn't exit
* already. Assumes fileToEdit can be resolved and accessed.
* @param fileToEdit (file we want to add import to)
* @param symbolName (item to import)
* @param fileName (path to the file)
* @param isDefault (if true, import follows style for importing default exports)
* @return Change
*/
function insertImport(source, fileToEdit, symbolName, fileName, isDefault = false) {
const rootNode = source;
const allImports = findNodes(rootNode, ts.SyntaxKind.ImportDeclaration);
// get nodes that map to import statements from the file fileName
const relevantImports = allImports.filter(node => {
// StringLiteral of the ImportDeclaration is the import file (fileName in this case).
const importFiles = node.getChildren()
.filter(child => child.kind === ts.SyntaxKind.StringLiteral)
.map(n => n.text);
return importFiles.filter(file => file === fileName).length === 1;
});
if (relevantImports.length > 0) {
let importsAsterisk = false;
// imports from import file
const imports = [];
relevantImports.forEach(n => {
Array.prototype.push.apply(imports, findNodes(n, ts.SyntaxKind.Identifier));
if (findNodes(n, ts.SyntaxKind.AsteriskToken).length > 0) {
importsAsterisk = true;
}
});
// if imports * from fileName, don't add symbolName
if (importsAsterisk) {
return new NoopChange();
}
const importTextNodes = imports.filter(n => n.text === symbolName);
// insert import if it's not there
if (importTextNodes.length === 0) {
const fallbackPos = findNodes(relevantImports[0], ts.SyntaxKind.CloseBraceToken)[0].getStart() ||
findNodes(relevantImports[0], ts.SyntaxKind.FromKeyword)[0].getStart();
return insertAfterLastOccurrence(imports, `, ${symbolName}`, fileToEdit, fallbackPos);
}
return new NoopChange();
}
// no such import declaration exists
const useStrict = findNodes(rootNode, ts.SyntaxKind.StringLiteral)
.filter((n) => n.text === 'use strict');
let fallbackPos = 0;
if (useStrict.length > 0) {
fallbackPos = useStrict[0].end;
}
const open = isDefault ? '' : '{ ';
const close = isDefault ? '' : ' }';
// if there are no imports or 'use strict' statement, insert import at beginning of file
const insertAtBeginning = allImports.length === 0 && useStrict.length === 0;
const separator = insertAtBeginning ? '' : ';\n';
const toInsert = `${separator}import ${open}${symbolName}${close}` +
` from '${fileName}'${insertAtBeginning ? ';\n' : ''}`;
return insertAfterLastOccurrence(allImports, toInsert, fileToEdit, fallbackPos, ts.SyntaxKind.StringLiteral);
}
exports.insertImport = insertImport;
function validateName(name) {
if (name && /^\d/.test(name)) {
throw new schematics_1.SchematicsException(core_1.tags.oneLine `name (${name})
can not start with a digit.`);
}
}
exports.validateName = validateName;
// Must start with a letter, and must contain only alphanumeric characters or dashes.
// When adding a dash the segment after the dash must also start with a letter.
exports.htmlSelectorRe = /^[a-zA-Z][.0-9a-zA-Z]*(:?-[a-zA-Z][.0-9a-zA-Z]*)*$/;
function validateHtmlSelector(selector) {
if (selector && !exports.htmlSelectorRe.test(selector)) {
throw new schematics_1.SchematicsException(core_1.tags.oneLine `Selector (${selector})
is invalid.`);
}
}
exports.validateHtmlSelector = validateHtmlSelector;