exception on build docs with esdoc-es7-plugin@latest

[cybermerlin]

https://github.com/esdoc/esdoc/blob/38ad523936d425278cc037c9c0e11338faa2709b/src/Factory/DocFactory.js#L89

.body of undefined

TypeError: Cannot read property 'body' of undefined
    at DocFactory._inspectExportDefaultDeclaration (core\node_modules\esdoc\out\src\Factory\DocFactory.js:135:48)
    at new DocFactory (core\node_modules\esdoc\out\src\Factory\DocFactory.js:90:10)
    at Function._traverse (core\node_modules\esdoc\out\src\ESDoc.js:233:21)
    at _walk.filePath (core\node_modules\esdoc\out\src\ESDoc.js:112:25)
    at Function._walk (core\node_modules\esdoc\out\src\ESDoc.js:204:9)
    at Function._walk (core\node_modules\esdoc\out\src\ESDoc.js:206:14)
    at Function.generate (core\node_modules\esdoc\out\src\ESDoc.js:96:10)
    at ESDocCLI.exec (core\node_modules\esdoc\out\src\ESDocCLI.js:71:23)
    at Object.<anonymous> (core\node_modules\esdoc\out\src\ESDocCLI.js:182:7)
    at Module._compile (internal/modules/cjs/loader.js:701:30)