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Build-time configuration of index.html #845

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sandstrom opened this issue Aug 16, 2022 · 3 comments
Open

Build-time configuration of index.html #845

sandstrom opened this issue Aug 16, 2022 · 3 comments

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@sandstrom
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I'd like to gauge interest / comments for an easier way to customize index.html output.

Use-case

We have some dynamic values that we want to interpolate into the index.html file at build time. For example, static classes on the <html> element and special meta attributes.

Ember already provides the content-for hook, but adding individual attributes to specific html elements is trickier.

Possible solution

  • Exposing the internal configReplacePatterns API, for example a addReplacePattern method or a key under config (environment.js), say additionalReplacePatterns: [ … ]
  • Allowing custom 'slots' for use with {{content-for 'my-slot'}}.

Reference code

https://github.com/ember-cli/ember-cli/blob/b24b73b388934796ca915ca665b48a27c857199b/lib/utilities/ember-app-utils.js#L169
@jrjohnson
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It doesn't meet your needs here, but for discussion sake what we do is use ember-cli-deploy-json-config to extract our index.html into JSON and then parse that json on the server to send a final index.html with these dynamic parts added there.

@sandstrom
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Thanks, good suggestions!

We also have a hack in place to make this work. But it would be cleaner if something like this was available in core. Customizing index.html is pretty common.

@johncowen johncowen mentioned this issue Sep 12, 2022
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@bertdeblock
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I assume, under Embroider (if it's possible / allowed at some point), that using https://github.com/jantimon/html-webpack-plugin might be an option to customise the final index.html?

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@sandstrom @jrjohnson @bertdeblock