Not possible to create an Interface definition in synthetic AST

[phated]

TypeScript Version: 2.3.2

Code

// A *self-contained* demonstration of the problem follows...

// There doesn't seem to be an API to create an Interface in the AST programmatically
const _implementsClause = ts.createHeritageClause(ts.SyntaxKind.ImplementsKeyword, [
    ts.createExpressionWithTypeArguments([], ts.createIdentifier('MyInterface'))
]);
const _exportModifier = ts.createToken(ts.SyntaxKind.ExportKeyword);
const _classExpression = ts.createClassExpression([_exportModifier], 'MyClass', [], [_implementsClause], []);
const _classStatement = ts.createStatement(_classExpression);

let src = ts.createSourceFile('output.ts', '', ts.ScriptTarget.ES5, false, ts.ScriptKind.TS);
src = ts.updateSourceFileNode(src, [_classStatement]);

Expected behavior:
There should be an API for creating an Interface definition in a synthetic AST.

Actual behavior:
Doesn't seem like the API exists.

[mhegazy]

You need to add a createInterfaceDeclaration to factory.ts, something a la createClassDeclaration.

[mhegazy]

PRs welcomed.

[phated]

@mhegazy will do! One question though: are there tests around these APIs? I couldn't find any.

[mhegazy]

No.

[mohsen1]

@phated can you also fix #15489 in your PR?

[phated]

I'll submit another one for that but I'm tackling some interface stuff right now.