Custom Data Extension

Custom Data format allows extension authors to easily extend VS Code's HTML / CSS language support without having to write code.

The two Contribution Points for using custom data in an extension are:

• contributes.html.customData
• contributes.css.customData

For example, by including this section in an extension's package.json:

{  "contributes": {  "html": {  "customData": ["./html.html-data.json"]  },  "css": {  "customData": ["./css.css-data.json"]  }  } } 

VS Code will load the HTML/CSS entities defined in both files and provide language support such as auto-completion and hover information for those entities.

You can find the custom-data-sample at microsoft/vscode-extension-samples.