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feat: add self-closing-tags migration #12128
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,5 @@ | ||
| --- | ||
| "svelte-migrate": minor | ||
| --- | ||
|
|
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| feat: add self-closing-tags migration |
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2 changes: 1 addition & 1 deletion
2
packages/kit/test/apps/basics/src/routes/data-sveltekit/noscroll/+page.svelte
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2 changes: 1 addition & 1 deletion
2
packages/kit/test/apps/basics/src/routes/data-sveltekit/noscroll/target/+page.svelte
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,3 @@ | ||
| <div style="height: 2000px; background: palegoldenrod" /> | ||
| <div style="height: 2000px; background: palegoldenrod"></div> | ||
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| <h1>target</h1> |
2 changes: 1 addition & 1 deletion
2
packages/kit/test/apps/basics/src/routes/iframes/nested/parent/+page.svelte
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1 +1 @@ | ||
| <iframe title="Child content" src="./child" /> | ||
| <iframe title="Child content" src="./child"></iframe> |
2 changes: 1 addition & 1 deletion
2
packages/kit/test/apps/basics/src/routes/no-ssr/margin/+page.svelte
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -12,4 +12,4 @@ | |
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| <a href="/routing/b" data-sveltekit-reload>b</a> | ||
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| <div class="hydrate-test" /> | ||
| <div class="hydrate-test"></div> | ||
2 changes: 1 addition & 1 deletion
2
packages/kit/test/apps/basics/src/routes/scroll/cross-document/a/+page.svelte
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,5 +1,5 @@ | ||
| <h1>a</h1> | ||
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| <div style="height: 200vh; background: teal" /> | ||
| <div style="height: 200vh; background: teal"></div> | ||
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| <a data-sveltekit-reload href="/scroll/cross-document/b">b</a> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| import colors from 'kleur'; | ||
| import fs from 'node:fs'; | ||
| import prompts from 'prompts'; | ||
| import glob from 'tiny-glob/sync.js'; | ||
| import { remove_self_closing_tags } from './migrate.js'; | ||
| import { pathToFileURL } from 'node:url'; | ||
| import { resolve } from 'import-meta-resolve'; | ||
|
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| export async function migrate() { | ||
| let compiler; | ||
| try { | ||
| compiler = await import_from_cwd('svelte/compiler'); | ||
| } catch (e) { | ||
| console.log(colors.bold().red('❌ Could not find a local Svelte installation.')); | ||
| return; | ||
| } | ||
|
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| console.log( | ||
| colors.bold().yellow('\nThis will update .svelte files inside the current directory\n') | ||
| ); | ||
|
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| const response = await prompts({ | ||
| type: 'confirm', | ||
| name: 'value', | ||
| message: 'Continue?', | ||
| initial: false | ||
| }); | ||
|
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| if (!response.value) { | ||
| process.exit(1); | ||
| } | ||
|
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| const files = glob('**/*.svelte') | ||
| .map((file) => file.replace(/\\/g, '/')) | ||
| .filter((file) => !file.includes('/node_modules/')); | ||
|
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| for (const file of files) { | ||
| try { | ||
| const code = await remove_self_closing_tags(compiler, fs.readFileSync(file, 'utf-8')); | ||
| fs.writeFileSync(file, code); | ||
| } catch (e) { | ||
| // continue | ||
| } | ||
| } | ||
|
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| console.log(colors.bold().green('✔ Your project has been updated')); | ||
| console.log(' If using Prettier, please upgrade to the latest prettier-plugin-svelte version'); | ||
| } | ||
|
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| /** @param {string} name */ | ||
| async function import_from_cwd(name) { | ||
| const cwd = pathToFileURL(process.cwd()).href; | ||
| const url = await resolve(name, cwd + '/x.js'); | ||
|
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| return import(url); | ||
| } |
191 changes: 191 additions & 0 deletions
191
packages/migrate/migrations/self-closing-tags/migrate.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,191 @@ | ||
| import MagicString from 'magic-string'; | ||
| import { walk } from 'zimmerframe'; | ||
|
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| const VoidElements = [ | ||
| 'area', | ||
| 'base', | ||
| 'br', | ||
| 'col', | ||
| 'embed', | ||
| 'hr', | ||
| 'img', | ||
| 'input', | ||
| 'keygen', | ||
| 'link', | ||
| 'menuitem', | ||
| 'meta', | ||
| 'param', | ||
| 'source', | ||
| 'track', | ||
| 'wbr' | ||
| ]; | ||
|
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| const SVGElements = [ | ||
| 'altGlyph', | ||
| 'altGlyphDef', | ||
| 'altGlyphItem', | ||
| 'animate', | ||
| 'animateColor', | ||
| 'animateMotion', | ||
| 'animateTransform', | ||
| 'circle', | ||
| 'clipPath', | ||
| 'color-profile', | ||
| 'cursor', | ||
| 'defs', | ||
| 'desc', | ||
| 'discard', | ||
| 'ellipse', | ||
| 'feBlend', | ||
| 'feColorMatrix', | ||
| 'feComponentTransfer', | ||
| 'feComposite', | ||
| 'feConvolveMatrix', | ||
| 'feDiffuseLighting', | ||
| 'feDisplacementMap', | ||
| 'feDistantLight', | ||
| 'feDropShadow', | ||
| 'feFlood', | ||
| 'feFuncA', | ||
| 'feFuncB', | ||
| 'feFuncG', | ||
| 'feFuncR', | ||
| 'feGaussianBlur', | ||
| 'feImage', | ||
| 'feMerge', | ||
| 'feMergeNode', | ||
| 'feMorphology', | ||
| 'feOffset', | ||
| 'fePointLight', | ||
| 'feSpecularLighting', | ||
| 'feSpotLight', | ||
| 'feTile', | ||
| 'feTurbulence', | ||
| 'filter', | ||
| 'font', | ||
| 'font-face', | ||
| 'font-face-format', | ||
| 'font-face-name', | ||
| 'font-face-src', | ||
| 'font-face-uri', | ||
| 'foreignObject', | ||
| 'g', | ||
| 'glyph', | ||
| 'glyphRef', | ||
| 'hatch', | ||
| 'hatchpath', | ||
| 'hkern', | ||
| 'image', | ||
| 'line', | ||
| 'linearGradient', | ||
| 'marker', | ||
| 'mask', | ||
| 'mesh', | ||
| 'meshgradient', | ||
| 'meshpatch', | ||
| 'meshrow', | ||
| 'metadata', | ||
| 'missing-glyph', | ||
| 'mpath', | ||
| 'path', | ||
| 'pattern', | ||
| 'polygon', | ||
| 'polyline', | ||
| 'radialGradient', | ||
| 'rect', | ||
| 'set', | ||
| 'solidcolor', | ||
| 'stop', | ||
| 'svg', | ||
| 'switch', | ||
| 'symbol', | ||
| 'text', | ||
| 'textPath', | ||
| 'tref', | ||
| 'tspan', | ||
| 'unknown', | ||
| 'use', | ||
| 'view', | ||
| 'vkern' | ||
| ]; | ||
|
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| /** | ||
| * @param {{ preprocess: any, parse: any }} svelte_compiler | ||
| * @param {string} source | ||
| */ | ||
| export async function remove_self_closing_tags({ preprocess, parse }, source) { | ||
| const preprocessed = await preprocess(source, { | ||
| /** @param {{ content: string }} input */ | ||
| script: ({ content }) => ({ | ||
| code: content | ||
| .split('\n') | ||
| .map((line) => ' '.repeat(line.length)) | ||
| .join('\n') | ||
| }), | ||
| /** @param {{ content: string }} input */ | ||
| style: ({ content }) => ({ | ||
| code: content | ||
| .split('\n') | ||
| .map((line) => ' '.repeat(line.length)) | ||
| .join('\n') | ||
| }) | ||
| }); | ||
| const ast = parse(preprocessed.code); | ||
| const ms = new MagicString(source); | ||
| /** @type {Array<() => void>} */ | ||
| const updates = []; | ||
| let is_foreign = false; | ||
| let is_custom_element = false; | ||
|
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| walk(ast.html, null, { | ||
| _(node, { next, stop }) { | ||
| if (node.type === 'Options') { | ||
| const namespace = node.attributes.find( | ||
| /** @param {any} a */ | ||
| (a) => a.type === 'Attribute' && a.name === 'namespace' | ||
| ); | ||
| if (namespace?.value[0].data === 'foreign') { | ||
| is_foreign = true; | ||
| stop(); | ||
| return; | ||
| } | ||
|
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| is_custom_element = node.attributes.some( | ||
| /** @param {any} a */ | ||
| (a) => a.type === 'Attribute' && (a.name === 'customElement' || a.name === 'tag') | ||
| ); | ||
| } | ||
|
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| if (node.type === 'Element' || node.type === 'Slot') { | ||
| const is_self_closing = source[node.end - 2] === '/'; | ||
| if ( | ||
| !is_self_closing || | ||
| VoidElements.includes(node.name) || | ||
| SVGElements.includes(node.name) || | ||
| !/^[a-z0-9_-]+$/.test(node.name) | ||
| ) { | ||
| return; | ||
| } | ||
|
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| let start = node.end - 2; | ||
| if (source[start - 1] === ' ') { | ||
| start--; | ||
| } | ||
| updates.push(() => { | ||
| if (node.type === 'Element' || is_custom_element) { | ||
| ms.update(start, node.end, `></${node.name}>`); | ||
| } | ||
| }); | ||
| } | ||
|
|
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| next(); | ||
| } | ||
| }); | ||
|
|
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| if (is_foreign) { | ||
| return source; | ||
| } | ||
|
|
||
| updates.forEach((update) => update()); | ||
| return ms.toString(); | ||
| } |
31 changes: 31 additions & 0 deletions
31
packages/migrate/migrations/self-closing-tags/migrate.spec.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| import { assert, test } from 'vitest'; | ||
| import * as compiler from 'svelte/compiler'; | ||
| import { remove_self_closing_tags } from './migrate.js'; | ||
|
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| /** @type {Record<string, string>} */ | ||
| const tests = { | ||
| '<div/>': '<div></div>', | ||
| '<div />': '<div></div>', | ||
| '<custom-element />': '<custom-element></custom-element>', | ||
| '<div class="foo"/>': '<div class="foo"></div>', | ||
| '<div class="foo" />': '<div class="foo"></div>', | ||
| '\t<div\n\t\tonclick={blah}\n\t/>': '\t<div\n\t\tonclick={blah}\n\t></div>', | ||
| '<foo-bar/>': '<foo-bar></foo-bar>', | ||
| '<link/>': '<link/>', | ||
| '<link />': '<link />', | ||
| '<svg><g /></svg>': '<svg><g /></svg>', | ||
| '<slot />': '<slot />', | ||
| '<svelte:options customElement="my-element" /><slot />': | ||
| '<svelte:options customElement="my-element" /><slot></slot>', | ||
| '<svelte:options namespace="foreign" /><foo />': '<svelte:options namespace="foreign" /><foo />', | ||
| '<script>console.log("<div />")</script>': '<script>console.log("<div />")</script>', | ||
| '<script lang="ts">let a: string = ""</script><div />': | ||
| '<script lang="ts">let a: string = ""</script><div></div>' | ||
| }; | ||
|
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| for (const input in tests) { | ||
| test(input, async () => { | ||
| const output = tests[input]; | ||
| assert.equal(await remove_self_closing_tags(compiler, input), output); | ||
| }); | ||
| } | ||
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ideally this would work on Svelte 5 codebases too (which means having
svelte@nextas a dependency, and using walk from eitherestree-walkerorzimmerframeinstead ofsvelte/compiler)There was a problem hiding this comment.
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This should work in Svelte 5 code bases, too, because when you do
npx ..aren't you storing the whole dependenies in a isolated folder somewhere on your computer? If not then yes we can switch to zimmerframe.Oh wait I see what you mean. Mhhhhm how does
npxwork in general in these situations? Can it pick up dependencies from the environment it's run in? If so then we can doawait import('svelte')and use that.There was a problem hiding this comment.
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Using the local Svelte installation now, tested it successfully on the Svelte 5 repo