Update to ast-types 0.8.18

[fkling]

... to include TypeParameter information (benjamn/ast-types@d5ce040). See also flow/flow-codemod#6 (comment) .

This would also require a new (patch) release of recast.

[fkling]

Mmh, I guess the printer needs to be updated? I'll look into it.

[fkling]

Updated the printer as well. Tested the print result in the node REPL:

var n = {
    "type": "TypeParameter",
    "name": "X",
    "bound": {
        "type": "TypeAnnotation",
        "typeAnnotation": {
            "type": "GenericTypeAnnotation",
            "id": {
                "type": "Identifier",
                "name": "T",
                "typeAnnotation": null,
                "optional": false
            },
            "typeParameters": null
        }
    },
    "variance": "minus",
    "default": {
        "type": "NumberTypeAnnotation",
    }
};
recast.print(n); // PrintResult { code: '-X: T=number' }

cc @jeffmo, @keyanzhang regarding the generated code. I don't know how NullTypeAnnotation should be printed (if at all), it doesn't seem to be used by any other nodes.

[jeffmo]

NullTypeAnnotation is the null annotations:

var a: null = null;

[fkling]

Ah OK. And it's not referenced anywhere else in the definition because it simply extends Type. Alright, will update the PR.

[fkling]

Ping? Without this, jscodeshift is unusable on files that use the latest flow syntax, @benjamn. 😞

[benjamn]

Done! Thanks for the bump. https://github.com/benjamn/recast/releases/tag/v0.11.11