`Callback must be a function` when using a custom tagged template grammar

[pfgithub]

Setting a custom tagged template grammar like csscustom:source.css and using it on a file

let csscustom = () => {};
csscustom`
a{
  color:#fff;
}
`;

produces a warning Callback must be a function and does not highlight the text differently

[lasbian]

Same issue...

[tujoworker]

By installing Node v10 (LTS) instead of using v12, I got rid of the warning message Callback must be a function. But my custom tagged template grammar extensions are currently not working on my new mac/atom setup.

[lasbian]

Was already running the v10 (LTS) :/

[pyrou]

Same issue here. Possible related issue: are gql code highlighted on your setup with following example ?

const typeDefs = gql`
  type Query {
    test: String
  }
`;

This highlight should be working without custom tagged template grammar, because shipped by default with the plugin, but is also not working anymore on my setup (OSX, tested with node 10, 11, 12).

[waspeer]

Same!

[christiaanwesterbeek]

Just for good measure, here's the error stack of Atom:

Uncaught (in promise) NodeError: Callback must be a function at makeCallback (fs.js:165:11) at Object.fs.unlink (fs.js:1048:14) at getTtlGrammarFiles.then.ttlGrammarFiles (/.../.atom/packages/language-babel/lib/create-ttl-grammar.js:260:12)

	NodeError	@	internal/errors.js:157
	makeCallback	@	fs.js:165
	fs.unlink	@	fs.js:1048
	getTtlGrammarFiles.then.ttlGrammarFiles	@	create-ttl-grammar.js? [sm]:271
	Promise.catch (async)
	doesGrammarFileExist.then.ifFileExists	@	create-ttl-grammar.js? [sm]:54
	Promise.then (async)
	Promise	@	create-ttl-grammar.js? [sm]:48
	createGrammar	@	create-ttl-grammar.js? [sm]:46
	configChangedTimer.setTimeout	@	create-ttl-grammar.js? [sm]:222

Related: https://github.com/gruntjs/grunt-contrib-jasmine/issues/266

[Axedyson]

The same problem occurs for me when setting the following tagged template grammar:

[paulobarcelos]

This is still the case today... super frustrating. Having the same problem on a new mac, fresh installation of Atom and up to date language-babel package.

[Navigatron]

I am experiencing the same issue. Setting:

html:text.html.basic

Versions:

[tiffting]

The same problem occurs for me when setting the following tagged template grammar:

Experiencing similar issue with /* @html */:text.html.basic

[eminvegan]

I have the same issue with .mjs files using template literals. My plugin list is: atom-beautify busy-signal docblockr file-icons highlight-selected hyperclick ide-css intentions language-babel language-javascript-plus linter (maybe incompatible?) linter-eslint (maybe incompatible?) linter-jshint (maybe incompatible?) linter-ui-default (maybe incompatible?) remember-folds remote-ftp

[bruns8234]

Problem still exists since now more than 2 years. Does anybody think it will be solved? I appreciate to get a solution because changing from VS Code to Atom does not get easier with such problems (I code in js and html and want to use this feature as an replacement for the ES6-html Plugin of VS-Code (which marks html in template strings).

[tinbka]

Same there since 3 years