Gatsby: "[email protected]" is exporting a variable named "onPostPrefetc hPathname" which isn't an API

[anilbhanushali]

I am following the tutorial to add offline support https://www.gatsbyjs.org/tutorial/part-eight/#add-offline-support

While building site using gatsby build I am getting below error. As mentioned in error, there is no exported method called "onPostPrefetchPathname" in browser-apis. may be this was renamed in version 2.0

Your plugins must export known APIs from their gatsby-browser.js.The following exports aren't APIs. Perhaps you made a typo or your plugin is outdated?

See https://www.gatsbyjs.org/docs/browser-apis/ for the list of Gatsby Browser APIs

- The plugin "[email protected]" is exporting a variable named "onPostPrefetc
hPathname" which isn't an API.

Perhaps you meant to export "onPrefetchPathname"?

Below is the environment info

System:
    OS: macOS 10.14
    CPU: x64 Intel(R) Core(TM) i5-5257U CPU @ 2.70GHz
    Shell: 5.3 - /bin/zsh
  Binaries:
    Node: 10.11.0 - ~/.nvm/versions/node/v10.11.0/bin/node
    npm: 6.4.1 - ~/.nvm/versions/node/v10.11.0/bin/npm  Browsers:
    Chrome: 69.0.3497.100
    Firefox: 61.0.1
    Safari: 12.0
  npmPackages:
    gatsby: ^2.0.0 => 2.0.0
    gatsby-plugin-emotion: ^2.0.5 => 2.0.5
    gatsby-plugin-manifest: ^2.0.5 => 2.0.5
    gatsby-plugin-offline: ^2.0.6 => 2.0.6
    gatsby-plugin-react-helmet: ^3.0.0 => 3.0.0
    gatsby-plugin-typography: ^2.2.0 => 2.2.0
    gatsby-source-filesystem: ^2.0.3 => 2.0.3
    gatsby-transformer-remark: ^2.1.7 => 2.1.7

[gaaabor]

I have exactly the same, i just wanted to post the issue.

[pieh]

Please update gatsby version, it should fix it

[GuyKh]

Updated to latest (2.0.24) in this PR

[arnriu]

Still have this very same issue after updating.
My infos:

System:
    OS: macOS 10.14
    CPU: x64 Intel(R) Core(TM) i7-3635QM CPU @ 2.40GHz
    Shell: 3.2.57 - /bin/bash
  Binaries:
    Node: 10.10.0 - /usr/local/bin/node
    npm: 6.4.1 - ~/.npm-packages/bin/npm
  Browsers:
    Chrome: 69.0.3497.100
    Safari: 12.0
  npmPackages:
    gatsby: next => 2.0.0-rc.28
    gatsby-image: ^1.0.55 => 1.0.55
    gatsby-plugin-manifest: ^2.0.5 => 2.0.5
    gatsby-plugin-offline: ^2.0.6 => 2.0.6
    gatsby-plugin-react-helmet: next => 3.0.0-rc.1
    gatsby-plugin-sharp: ^1.6.48 => 1.6.48
    gatsby-source-wordpress: ^3.0.6 => 3.0.6
    gatsby-transformer-sharp: ^1.6.27 => 1.6.27
  npmGlobalPackages:
    gatsby-cli: 1.1.58

[arnriu]

Ok, next was the problem, it's stuck at rc version, I used latest instead. Did the trick.

[pieh]

offline plugin should report of there is missmatching gatsby version thanks to @GuyKh PR #9150 , so I'm closing this issue

[shakes90]

Problem still exists with gatsby v2.4.3

[ToTenMilan]

Had the same issue, so I've just monkeypatched node_modules/gatsby-plugin-offline/gatsby-browser.js like suggested in prompt, from this:

exports.onPostPrefetchPathname = function (_ref) { ... }

to this:

exports.onPrefetchPathname = function (_ref) { ... }

and the app has built