Describe the bug
When the compiler printer is asked to print a svelte:body tag, it crashes.
Reproduction
import { print, parse } from "svelte/compiler"; // 5.55.5
const code = `<svelte:body />`;
const parsed = parse(code, { filename: "foobar.svelte", modern: true });
const printed = print(parsed).code; // crash: "Error: Not implemented: SvelteBody"Logs
System Info
System:
OS: macOS 26.4.1
CPU: (16) arm64 Apple M3 Max
Memory: 93.39 MB / 48.00 GB
Shell: 5.9 - /bin/zsh
Binaries:
Node: 24.12.0 - /Users/nmain/.nvm/versions/node/v24.12.0/bin/node
Yarn: 1.22.22 - /Users/nmain/.nvm/versions/node/v24.12.0/bin/yarn
npm: 11.6.2 - /Users/nmain/.nvm/versions/node/v24.12.0/bin/npm
pnpm: 11.1.1 - /Users/nmain/.nvm/versions/node/v24.12.0/bin/pnpm
Browsers:
Safari: 26.4
npmPackages:
svelte: 5.55.5 => 5.55.5Severity
annoyance
Describe the bug
When the compiler printer is asked to print a
svelte:bodytag, it crashes.Reproduction
Logs
System Info
System: OS: macOS 26.4.1 CPU: (16) arm64 Apple M3 Max Memory: 93.39 MB / 48.00 GB Shell: 5.9 - /bin/zsh Binaries: Node: 24.12.0 - /Users/nmain/.nvm/versions/node/v24.12.0/bin/node Yarn: 1.22.22 - /Users/nmain/.nvm/versions/node/v24.12.0/bin/yarn npm: 11.6.2 - /Users/nmain/.nvm/versions/node/v24.12.0/bin/npm pnpm: 11.1.1 - /Users/nmain/.nvm/versions/node/v24.12.0/bin/pnpm Browsers: Safari: 26.4 npmPackages: svelte: 5.55.5 => 5.55.5Severity
annoyance