gen-flow-files generates incorrect declaration for default function

[Gozala]

Here is an example code:

/* @flow */

export const inc = (a:number):number =>
  a + 1

export default inc

gen-flow-files generates following typedefs:

// @flow

declare export default function(a: number): number;
declare export function inc(a: number): number;

Which it then fails to parse:

3: declare export default function(a: number): number;
                                  ^ Unexpected token (
3: declare export default function(a: number): number;
                                   ^ Unexpected identifier
3: declare export default function(a: number): number;
                                    ^ Unexpected token :

[patriq]

Fixed it using this in my package.json file:

"build:flow": "flow gen-flow-files src/index.js > lib/index.js.flow && npm run fix-flow-issue-2830",
"fix-flow-issue-2830": "replace-in-file \"/default function(\\(.*\\)):/\" \"default \\$1 =>\" lib/index.js.flow --isRegex"

This, after generating the gen-flow-files will replace the unnamed default functions with the workaround in dogma-io/nodely#7

[TrySound]

gen-flow-files replacement is coming soon