copy-button

packages/shiki-copy-button/.gitignore

@@ -0,0 +1,175 @@
+# Based on https://raw.githubusercontent.com/github/gitignore/main/Node.gitignore
+
+# Logs
+
+logs
+_.log
+npm-debug.log_
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+.pnpm-debug.log*
+
+# Caches
+
+.cache
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+
+report.[0-9]_.[0-9]_.[0-9]_.[0-9]_.json
+
+# Runtime data
+
+pids
+_.pid
+_.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+
+lib-cov
+
+# Coverage directory used by tools like istanbul
+
+coverage
+*.lcov
+
+# nyc test coverage
+
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+
+bower_components
+
+# node-waf configuration
+
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+
+build/Release
+
+# Dependency directories
+
+node_modules/
+jspm_packages/
+
+# Snowpack dependency directory (https://snowpack.dev/)
+
+web_modules/
+
+# TypeScript cache
+
+*.tsbuildinfo
+
+# Optional npm cache directory
+
+.npm
+
+# Optional eslint cache
+
+.eslintcache
+
+# Optional stylelint cache
+
+.stylelintcache
+
+# Microbundle cache
+
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+
+.node_repl_history
+
+# Output of 'npm pack'
+
+*.tgz
+
+# Yarn Integrity file
+
+.yarn-integrity
+
+# dotenv environment variable files
+
+.env
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
+
+# parcel-bundler cache (https://parceljs.org/)
+
+.parcel-cache
+
+# Next.js build output
+
+.next
+out
+
+# Nuxt.js build / generate output
+
+.nuxt
+dist
+
+# Gatsby files
+
+# Comment in the public line in if your project uses Gatsby and not Next.js
+
+# https://nextjs.org/blog/next-9-1#public-directory-support
+
+# public
+
+# vuepress build output
+
+.vuepress/dist
+
+# vuepress v2.x temp and cache directory
+
+.temp
+
+# Docusaurus cache and generated files
+
+.docusaurus
+
+# Serverless directories
+
+.serverless/
+
+# FuseBox cache
+
+.fusebox/
+
+# DynamoDB Local files
+
+.dynamodb/
+
+# TernJS port file
+
+.tern-port
+
+# Stores VSCode versions used for testing VSCode extensions
+
+.vscode-test
+
+# yarn v2
+
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.*
+
+# IntelliJ based IDEs
+.idea
+
+# Finder (MacOS) folder config
+.DS_Store

packages/shiki-copy-button/README.md

@@ -0,0 +1,15 @@
+# shiki-copy-button
+
+To install dependencies:
+
+```bash
+bun install
+```
+
+To run:
+
+```bash
+bun run index.ts
+```
+
+This project was created using `bun init` in bun v1.1.17. [Bun](https://bun.sh) is a fast all-in-one JavaScript runtime.

packages/shiki-copy-button/index.ts

@@ -0,0 +1,50 @@
+import type { ShikiTransformer } from "shiki";
+import { getIconData } from "@iconify/utils";
+import { icons, type IconifyJSON } from "@iconify-json/iconoir";
+import type { ElementContent, Element } from "hast";
+import { parse } from "svg-parser";
+
+function iconSvgHast(icons: IconifyJSON, name: string): Element {
+  const icon = getIconData(icons, name)!;
+  const svg = parse(icon.body);
+  return {
+    type: "element",
+    tagName: "svg",
+    properties: {
+      width: 24,
+      height: 24,
+      viewBox: `0 0 ${icon.width} ${icon.height}`,
+      fill: "none",
+      xmlns: "http://www.w3.org/2000/svg",
+    },
+    children: svg.children as ElementContent[],
+  };
+}
+
+export function shikiCopyButton(): ShikiTransformer {
+  return {
+    pre: (hast) => {
+      const copy = iconSvgHast(icons, "copy");
+      const check = iconSvgHast(icons, "check");
+      copy.properties.class = [
+        "shiki-copy-button-copy",
+        "shiki-copy-button-icon",
+      ].join(" ");
+      check.properties.class = [
+        "shiki-copy-button-check",
+        "shiki-copy-button-icon",
+      ].join(" ");
+      hast.children = [
+        {
+          type: "element",
+          tagName: "button",
+          properties: {
+            class: "shiki-copy-button",
+          },
+          children: [copy, check],
+        },
+        ...hast.children,
+      ];
+    },
+  };
+}

packages/shiki-copy-button/package.json

@@ -0,0 +1,19 @@
+{
+  "name": "shiki-copy-button",
+  "module": "index.ts",
+  "type": "module",
+  "devDependencies": {
+    "@iconify/types": "^2.0.0",
+    "@iconify/utils": "^2.1.25",
+    "@types/bun": "latest"
+  },
+  "peerDependencies": {
+    "typescript": "^5.0.0"
+  },
+  "dependencies": {
+    "@iconify-json/iconoir": "^1.1.44",
+    "@types/hast": "^3.0.4",
+    "iconify": "^1.4.0",
+    "shiki": "^1.10.0"
+  }
+}

packages/shiki-copy-button/tsconfig.json

@@ -0,0 +1,27 @@
+{
+  "compilerOptions": {
+    // Enable latest features
+    "lib": ["ESNext", "DOM"],
+    "target": "ESNext",
+    "module": "ESNext",
+    "moduleDetection": "force",
+    "jsx": "react-jsx",
+    "allowJs": true,
+
+    // Bundler mode
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    "noEmit": true,
+
+    // Best practices
+    "strict": true,
+    "skipLibCheck": true,
+    "noFallthroughCasesInSwitch": true,
+
+    // Some stricter flags (disabled by default)
+    "noUnusedLocals": false,
+    "noUnusedParameters": false,
+    "noPropertyAccessFromIndexSignature": false
+  }
+}

packages/web/astro.config.ts

@@ -9,6 +9,7 @@ import remarkGemoji from "remark-gemoji";
 import remarkGfm from "remark-gfm";
 import remarkMath from "remark-math";
 import remarkSectionize from "remark-sectionize";
+import { shikiCopyButton } from "shiki-copy-button";
 import tsConfigPaths from "vite-tsconfig-paths";
 
 // https://astro.build/config
@@ -33,7 +34,7 @@ export default defineConfig({
         rehypePrettyCode,
         {
           theme: { dark: "github-dark", light: "github-light" },
-          transformers: [],
+          transformers: [shikiCopyButton()],
         },
       ],
     ],

packages/web/package.json

@@ -30,6 +30,7 @@
     "@types/bun": "^1.1.6",
     "@types/license-checker": "^25.0.6",
     "@types/remark-heading-id": "^1.0.0",
+    "@types/svg-parser": "^2.0.6",
     "astro": "^4.11.3",
     "astro-icon": "^1.1.0",
     "astro-seo": "^0.8.4",
@@ -56,6 +57,8 @@
     "retext-stringify": "^4.0.0",
     "sharp": "^0.33.4",
     "shiki": "^1.9.0",
+    "shiki-copy-button": "workspace:*",
+    "svg-parser": "^2.0.4",
     "typescript": "^5.4.5",
     "unified": "^11.0.4",
     "vite-tsconfig-paths": "^4.3.2"

packages/web/src/components/composite/MdArticle.astro

@@ -2,6 +2,23 @@
   <slot />
 </article>
 
+<script>
+  document.querySelectorAll("button.shiki-copy-button").forEach((element) => {
+    const button = element as HTMLButtonElement;
+    console.log(button);
+    button.addEventListener("click", () => {
+      const text = button.parentNode?.querySelector("code")?.textContent;
+      if (text) {
+        navigator.clipboard.writeText(text);
+        button.dataset.copied = "true";
+        setTimeout(() => {
+          button.dataset.copied = "false";
+        }, 1500);
+      }
+    });
+  });
+</script>
+
 <style>
   @layer component {
     article {
@@ -31,6 +48,22 @@
       padding: 0.5rem;
       border-radius: 0.2rem;
       scrollbar-color: var(--fg-thumb) var(--fg-track);
+      position: relative;
+    }
+
+    article :global(pre button.shiki-copy-button) {
+      position: absolute;
+      right: 0.3rem;
+      top: 0.3rem;
+    }
+
+    article :global(pre button[data-copied="true"] .shiki-copy-button-copy) {
+      display: none;
+    }
+
+    article
+      :global(pre button:not([data-copied="true"]) .shiki-copy-button-check) {
+      display: none;
     }
 
     article :global(pre code) {