`layout` option of `createPage` does not work

Description

layout option of createPage does not work. As this document https://www.gatsbyjs.org/docs/creating-and-modifying-pages/#creating-pages-in-gatsby-nodejs, layout option can be passed to createPage API so Gatsby can get a template from layouts/${layout} folder.

Environment

Gatsby version: 1.9.138 Node.js version: v8.9.3 Operating System: Mac OS High Sierra 10.13.2

Actual result

If layout option is passed an value to createPages API, ex: ‘blog-layout’, layouts/blog-layout.js is not loaded. So I have to ignore the layout - don’t pass any value, in order to Gatsby falls to default value to load layouts/index.js file.

Expected behavior

layout option should work like in the document (https://www.gatsbyjs.org/docs/creating-and-modifying-pages/#creating-pages-in-gatsby-nodejs) mentions.

[belbiy]

I’m also having this issue as well, using exports.createPages like this

createPage({
    path: node.data.path,
    layout: 'custom-layout',
    component: path.resolve(node.node.absolutePath),
})

Still uses the index layout.

But when I apply layout from exports.onCreatePage it works.

[KyleAMathews]

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