TypeScriptAST.Corrected 1.0.0

.NET Framework 4.5.2
NuGet\Install-Package TypeScriptAST.Corrected -Version 1.0.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
dotnet add package TypeScriptAST.Corrected --version 1.0.0
<PackageReference Include="TypeScriptAST.Corrected" Version="1.0.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add TypeScriptAST.Corrected --version 1.0.0
#r "nuget: TypeScriptAST.Corrected, 1.0.0"
#r directive can be used in F# Interactive, C# scripting and .NET Interactive. Copy this into the interactive tool or source code of the script to reference the package.
// Install TypeScriptAST.Corrected as a Cake Addin
#addin nuget:?package=TypeScriptAST.Corrected&version=1.0.0

// Install TypeScriptAST.Corrected as a Cake Tool
#tool nuget:?package=TypeScriptAST.Corrected&version=1.0.0

This is based on package https://www.nuget.org/packages/TypeScriptAST/ and enhanced with PR: https://github.com/ToCSharp/TypeScriptAST/pull/9 If you face the issue described in the PR you need this package otherwise just use the original please ๐Ÿ˜ƒ.

This is old project for TypeScript, which is developing so fast. I think now is not the best option for parsing TypeScript. Now it's not easy to upgrade to the current TypeScript. For JavaScript I think it still good. It's time to rewrite TypeScriptAST. Microsoft showed us how to do it in System.Text.Json for .NET Core 3.0: "Provide high-performance JSON APIs. We needed a new set of JSON APIs that are highly tuned for performance by using Span" https://devblogs.microsoft.com/dotnet/try-the-new-system-text-json-apis/ https://github.com/dotnet/runtime/blob/master/src/libraries/System.Text.Json/src/System/Text/Json/Reader/Utf8JsonReader.cs


.NET port of Microsoft's TypeScript parser for simple AST manipulation.

It works with TypeScript, JavaScript and DefinitelyTyped(".d.ts") files and gives the same tree as typescriptServices.js.

Join the chat at https://gitter.im/TypeScriptAST/Lobby

Install TypeScriptAST via NuGet

If you want to include TypeScriptAST.Corrected in your project, you can install it directly from NuGet

PM> Install-Package TypeScriptAST.Corrected

Create AST

var ast = new TypeScriptAST(File.ReadAllText(file), file);

Find Node

By SyntaxKind

  var functions = ast.OfKind(SyntaxKind.FunctionExpression);
  var vars = functions.FirstOrDefault()?.OfKind(SyntaxKind.VariableDeclaration);

By Node type

  var functions = ast.GetDescendants().OfType<FunctionExpression>();
 ย var vars = functions.FirstOrDefault()?.GetDescendants().OfType<VariableDeclaration>();


  var firstFunc = ast.OfKind(SyntaxKind.FunctionExpression).FirstOrDefault();
  var text = firstFunc?.GetText();
  var withComments = firstFunc?.GetTextWithComments();

Change Node

  var funcNewCode = "function() {}";
  var change = new ChangeAST();
  change.ChangeNode(firstFunc, funcNewCode);
  var newSource = change.GetChangedSource(ast.SourceStr);
  File.WriteAllText(file, newSource);

File modification Example

This example included in TypeScriptAstExample. It finds modules in file, collects some info, adds new function to module.

  using Zu.TypeScript;
  using Zu.TypeScript.Change;
  using Zu.TypeScript.TsTypes;
            var fileName = "parser.ts";
            var source = File.ReadAllText(fileName);

            var ast = new TypeScriptAST(source, fileName);

            var change = new ChangeAST();

            foreach (var module in ast.GetDescendants().OfType<ModuleDeclaration>())
                var funcs = module.Body.Children.OfType<FunctionDeclaration>().ToList();
                var enums = module.Body.Children.OfType<EnumDeclaration>();
                var moduleInfoFunc = $@"
    export function getModuleInfo() {{
        return ""Module {module.IdentifierStr} contains {funcs.Count()} functions ({funcs.Count(v => v.IdentifierStr.StartsWith("parse"))} starts with parse), {enums.Count()} enums ..."";
                change.InsertBefore(module.Body.Children.First(), moduleInfoFunc);
            var newSource = change.GetChangedSource(ast.SourceStr);

            File.WriteAllText("parser2.ts", newSource);

Product Versions
.NET Framework net452 net46 net461 net462 net463 net47 net471 net472 net48
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Version Downloads Last updated
1.0.0 297 8/11/2021

Initial release.