Generate type reference node with array access

Question

I am trying to create this type reference:

Parameters<Foo['bar']>[0]

how do I achieve this using ts.createTypeReferenceNode?

ts.createTypeReferenceNode('Parameters', [
    ts.createTypeReferenceNode(`Foo['bar']`, []),
])

allows no array access.

Avish · Accepted Answer · 2020-07-12 20:55:37Z

2

According to ts-ast-viewer.com, you'd need to use ts.createIndexedAccessTypeNode and ts.createLiteralTypeNode:

        ts.createIndexedAccessTypeNode(
          ts.createTypeReferenceNode(
            ts.createIdentifier("Parameters"),
            [ts.createIndexedAccessTypeNode(
              ts.createTypeReferenceNode(
                ts.createIdentifier("Foo"),
                undefined
              ),
              ts.createLiteralTypeNode(ts.createStringLiteral("bar"))
            )]
          ),
          ts.createLiteralTypeNode(ts.createNumericLiteral("0"))
        )

answered Jul 12, 2020 at 20:55

Avish

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1 Comment

coderbyheart Over a year ago

Thank you! Using ts.createIndexedAccessTypeNode solved it for me. ts-ast-viewer.com is a great tip, previously I manually figured out how to generate the code.

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