--- title: "prismjs Breaking Changes on npm | Since.dev" description: "What each prismjs release removed, renamed or changed: 11 breaking changes in 2 versions on npm, each with its source." canonical_url: https://since.dev/packages/npm/prismjs last_updated: 2022-08-23 --- # prismjs breaking changes Every breaking API change we have recorded in prismjs on npm: 11 breaking changes in 2 versions. Below are its newest 2 versions, removals and renames first, each with its source. Newest change August 23, 2022 ## 1.29.0 2 breaking changes, first published August 23, 2022. - **Behavior changed** `Line Highlight` Highlight ranges outside the code's lines are now ignored and offsets are applied when clamping ranges, which can change the highlighted lines. [github.com](https://github.com/PrismJS/prism/blob/v1.29.0/CHANGELOG.md) - **Behavior changed** `Normalize Whitespace` The plugin gained configuration through attributes, so existing setups may now be read differently; review any whitespace settings you rely on. [github.com](https://github.com/PrismJS/prism/blob/v1.29.0/CHANGELOG.md) ## 1.28.0 9 breaking changes, first published April 17, 2022. - **Renamed** `Ada` The Ada token previously named attr-name is now called attribute, with attr-name kept as an alias. Update selectors that target the old name. [github.com](https://github.com/PrismJS/prism/blob/v1.28.0/CHANGELOG.md) - **Renamed** `Flow` The alias of the Flow type token is now class-name. Update styles or plugins that rely on the old alias. [github.com](https://github.com/PrismJS/prism/blob/v1.28.0/CHANGELOG.md) - **Renamed** `GEDCOM` The GEDCOM token previously called tag is now called record. Update code that targets the old token name. [github.com](https://github.com/PrismJS/prism/blob/v1.28.0/CHANGELOG.md) - **Renamed** `NEON` The alias of the NEON key token is now property. Update styles or plugins that rely on the old alias. [github.com](https://github.com/PrismJS/prism/blob/v1.28.0/CHANGELOG.md) - **Renamed** `properties` Token names are now key and value, with attr-name and attr-value kept only as aliases. Update any CSS or plugin code that targets the old token names. [github.com](https://github.com/PrismJS/prism/blob/v1.28.0/CHANGELOG.md) - **Behavior changed** `AutoHotkey` AutoHotkey tokens were changed to the standard token set. Update any code that targets its previous token names. [github.com](https://github.com/PrismJS/prism/blob/v1.28.0/CHANGELOG.md) - **Behavior changed** `Excel Formula` The function-name, range and cell tokens now use different aliases. Update any styling or plugin code that relies on the old aliases. [github.com](https://github.com/PrismJS/prism/blob/v1.28.0/CHANGELOG.md) - **Behavior changed** `Keep Markup` The plugin now passes original token nodes rather than clones. Code that mutates nodes it receives may see different results. [github.com](https://github.com/PrismJS/prism/blob/v1.28.0/CHANGELOG.md) - **Behavior changed** `VHDL` Attribute is now a distinct token instead of being tagged as keyword. Update styles that depended on the old tagging. [github.com](https://github.com/PrismJS/prism/blob/v1.28.0/CHANGELOG.md) ## Check your code These are the changes. To see which of them reach your code, [scan a public repository](https://since.dev/scan.md), or have your coding agent call `check_code` with your manifest or lockfile over [MCP](https://since.dev/docs.md#mcp). [The API](https://since.dev/docs.md#api) reads every change in every version, not only the newest. On Team and up, a fix pull request opens for the changes that reach a connected repository. Nothing merges or deploys. ## Put your code on continuous management. Scan a public repository now, or give your agent one line. ### See how out of date your code is. [Scan a repository](https://since.dev/scan.md). Any public GitHub repository. No sign-in. ### Tell your agent what changed since it was trained. `claude mcp add --transport http since https://api.since.dev/mcp` --- Every page on this site as Markdown: https://since.dev/sitemap.md. For agents: https://since.dev/llms.txt.