diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..a27bfec
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "typedoc-plugin-sourcefile-url"]
+	path = typedoc-plugin-sourcefile-url
+	url = https://github.com/gdelmas/typedoc-plugin-sourcefile-url
diff --git a/.vscode/settings.json b/.vscode/settings.json
index 1e9908d..fa86a35 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,4 +1,17 @@
 {
   "prettier.enable": true,
-  "editor.formatOnSave": true
-}
+  "editor.formatOnSave": true,
+  "editor.defaultFormatter": "esbenp.prettier-vscode",
+  "[typescript]": {
+    "editor.defaultFormatter": "esbenp.prettier-vscode",
+  },
+  "[typescriptreact]": {
+    "editor.defaultFormatter": "esbenp.prettier-vscode",
+  },
+  "[javascript]": {
+    "editor.defaultFormatter": "esbenp.prettier-vscode",
+  },
+  "[javascriptreact]": {
+    "editor.defaultFormatter": "esbenp.prettier-vscode",
+  }
+}
\ No newline at end of file
diff --git a/package.json b/package.json
index 35fef0c..41f07f7 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,7 @@
     "fs-extra": "^10.0.0",
     "got": "^11.8.2",
     "p-queue": "^7.1.0",
+    "pkg-up": "^3.1.0",
     "prettier": "^2.3.2",
     "react": "^17.0.2",
     "react-dom": "^17.0.2",
@@ -32,4 +33,4 @@
     "singleQuote": true,
     "trailingComma": "all"
   }
-}
+}
\ No newline at end of file
diff --git a/src/unpkg-plugin/UnpkgPlugin.js b/src/unpkg-plugin/UnpkgPlugin.js
new file mode 100644
index 0000000..6dee075
--- /dev/null
+++ b/src/unpkg-plugin/UnpkgPlugin.js
@@ -0,0 +1,13 @@
+require('ts-node').register({
+  projectSearchDir: __dirname,
+});
+const { UnpkgPlugin } = require('./UnpkgPluginImpl');
+
+module.exports = function (PluginHost) {
+  var app = PluginHost.owner;
+
+  // app.options.addDeclaration({name: 'sourcefile-url-map'});
+  // app.options.addDeclaration({name: 'sourcefile-url-prefix'});
+
+  app.converter.addComponent('unpkg-plugin', UnpkgPlugin);
+};
diff --git a/src/unpkg-plugin/UnpkgPluginImpl.ts b/src/unpkg-plugin/UnpkgPluginImpl.ts
new file mode 100644
index 0000000..ab1c0f1
--- /dev/null
+++ b/src/unpkg-plugin/UnpkgPluginImpl.ts
@@ -0,0 +1,74 @@
+// Built by modifying https://github.com/gdelmas/typedoc-plugin-sourcefile-url
+
+import * as path from 'path';
+import * as fs from 'fs';
+import { Component } from 'typedoc/dist/lib/utils/component';
+import { ConverterComponent } from 'typedoc/dist/lib/converter/components';
+import { Converter } from 'typedoc/dist/lib/converter/converter';
+import { Context } from 'typedoc/dist/lib/converter/context';
+import { SourceReference } from 'typedoc/dist/lib/models/sources/file';
+import { Options } from 'typedoc/dist/lib/utils/options/options';
+import { sync as pkgUp } from 'pkg-up';
+import { URL } from 'url';
+import { dirname, relative } from 'path';
+
+@Component({ name: 'unpkg-plugin' })
+export class UnpkgPlugin extends ConverterComponent {
+  private pkgUpCache = new Map<string, string | null>();
+  private pkgUp(cwd: string) {
+    let cacheEntry = this.pkgUpCache.get(cwd);
+    if (cacheEntry !== undefined) return cacheEntry;
+    cacheEntry = pkgUp({ cwd });
+    this.pkgUpCache.set(cwd, cacheEntry);
+    return cacheEntry;
+  }
+
+  public initialize(): void {
+    this.listenTo(this.owner, Converter.EVENT_BEGIN, this.onBegin);
+  }
+
+  private onBegin(): void {
+    // register handler
+    this.listenTo(this.owner, Converter.EVENT_RESOLVE_END, this.onEndResolve);
+  }
+
+  private onEndResolve(context: Context): void {
+    const project = context.project;
+
+    // process mappings
+    for (const sourceFile of project.files) {
+      const { fullFileName } = sourceFile;
+      if (fullFileName) {
+        const pkgPath = this.pkgUp(dirname(fullFileName));
+        if (pkgPath) {
+          const pkg = require(pkgPath);
+          const url = new URL('https://unpkg.com/');
+          url.pathname = `browse/${pkg.name}@${pkg.version}/${relative(
+            dirname(pkgPath),
+            fullFileName,
+          )}`;
+          sourceFile.url = url.toString();
+          // TODO should we include version number in this path?
+          // e.g. outdent@0.8.0/dist/index.d.ts instead of outdent/dist/index.d.ts?
+          sourceFile.fileName = relative(dirname(dirname(pkgPath)), fullFileName);
+          // TODO we are mutating the sourceFile.fileName solely so we can copy the value below.
+          // Should we avoid mutating sourceFile.fileName, *only* modifying `source.fileName` below?
+        }
+      }
+    }
+
+    // add line anchors
+    for (let key in project.reflections) {
+      const reflection = project.reflections[key];
+
+      if (reflection.sources) {
+        reflection.sources.forEach((source: SourceReference) => {
+          if (source.file && source.file.url) {
+            source.url = source.file.url + '#L' + source.line;
+            source.fileName = source.file.fileName;
+          }
+        });
+      }
+    }
+  }
+}
diff --git a/src/unpkg-plugin/package.json b/src/unpkg-plugin/package.json
new file mode 100644
index 0000000..6a0d2ef
--- /dev/null
+++ b/src/unpkg-plugin/package.json
@@ -0,0 +1,3 @@
+{
+    "type": "commonjs"
+}
\ No newline at end of file
diff --git a/src/unpkg-plugin/tsconfig.json b/src/unpkg-plugin/tsconfig.json
new file mode 100644
index 0000000..d6205b0
--- /dev/null
+++ b/src/unpkg-plugin/tsconfig.json
@@ -0,0 +1,6 @@
+{
+    "extends": "../../tsconfig.json",
+    "compilerOptions": {
+        "module": "CommonJS"
+    }
+}
\ No newline at end of file
diff --git a/src/work.ts b/src/work.ts
index ee99183..e20db8b 100755
--- a/src/work.ts
+++ b/src/work.ts
@@ -102,6 +102,7 @@ for (const lib of libsToBuild) {
           entryPoints: [entrypointPath],
           out: outDir,
           externalPattern,
+          plugin: [resolve(fileURLToPath(import.meta.url), '../unpkg-plugin/UnpkgPlugin.js')],
         },
       },
       null,
diff --git a/tsconfig.json b/tsconfig.json
index 0a8bf1f..f21dc8b 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -1,6 +1,11 @@
 {
   "extends": "@tsconfig/node16/tsconfig.json",
-  "include": ["src"],
+  "include": [
+    "src"
+  ],
+  "exclude": [
+    "src/unpkg-plugin"
+  ],
   "ts-node": {
     "transpileOnly": true
     // "transpiler": "ts-node/transpilers/swc-experimental"
@@ -17,8 +22,11 @@
     "isolatedModules": true,
     "strict": true,
     "moduleResolution": "node",
-    "types": ["node"],
+    "types": [
+      "node"
+    ],
     "esModuleInterop": true,
-    "jsx": "react"
+    "jsx": "react",
+    "experimentalDecorators": true
   }
-}
+}
\ No newline at end of file
diff --git a/typedoc-plugin-sourcefile-url b/typedoc-plugin-sourcefile-url
new file mode 160000
index 0000000..0e26a67
--- /dev/null
+++ b/typedoc-plugin-sourcefile-url
@@ -0,0 +1 @@
+Subproject commit 0e26a67b02479dbf69e3d2ba6a5d3f3d7fabe2f6
diff --git a/yarn.lock b/yarn.lock
index 1e4dea5..533b702 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -366,6 +366,13 @@ eventemitter3@^4.0.7:
   resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-4.0.7.tgz#2de9b68f6528d5644ef5c59526a1b4a07306169f"
   integrity sha512-8guHBZCwKnFhYdHr2ysuRWErTwhoN2X8XELRlrRwpmfeY2jjuUN4taQMsULKUVo1K4DvZl+0pgfyoysHxvmvEw==
 
+find-up@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/find-up/-/find-up-3.0.0.tgz#49169f1d7993430646da61ecc5ae355c21c97b73"
+  integrity sha512-1yD6RmLI1XBfxugvORwlck6f75tYL+iR0jqwsOrOxMZyGYqUuDhJ0l4AXdO1iX/FTs9cBAMEk1gWSEx1kSbylg==
+  dependencies:
+    locate-path "^3.0.0"
+
 form-data@^3.0.0:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/form-data/-/form-data-3.0.1.tgz#ebd53791b78356a99af9a300d4282c4d5eb9755f"
@@ -511,6 +518,14 @@ keyv@^4.0.0:
   dependencies:
     json-buffer "3.0.1"
 
+locate-path@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/locate-path/-/locate-path-3.0.0.tgz#dbec3b3ab759758071b58fe59fc41871af21400e"
+  integrity sha512-7AO748wWnIhNqAuaty2ZWHkQHRSNfPVIsPIfwEOWO22AmaoVrWavlOcMR5nzTLNYvp36X220/maaRsrec1G65A==
+  dependencies:
+    p-locate "^3.0.0"
+    path-exists "^3.0.0"
+
 loose-envify@^1.1.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.4.0.tgz#71ee51fa7be4caec1a63839f7e682d8132d30caf"
@@ -618,6 +633,20 @@ p-cancelable@^2.0.0:
   resolved "https://registry.yarnpkg.com/p-cancelable/-/p-cancelable-2.1.1.tgz#aab7fbd416582fa32a3db49859c122487c5ed2cf"
   integrity sha512-BZOr3nRQHOntUjTrH8+Lh54smKHoHyur8We1V8DSMVrl5A2malOOwuJRnKRDjSnkoeBh4at6BwEnb5I7Jl31wg==
 
+p-limit@^2.0.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-2.3.0.tgz#3dd33c647a214fdfffd835933eb086da0dc21db1"
+  integrity sha512-//88mFWSJx8lxCzwdAABTJL2MyWB12+eIY7MDL2SqLmAkeKU9qxRvWuSyTjm3FUmpBEMuFfckAIqEaVGUDxb6w==
+  dependencies:
+    p-try "^2.0.0"
+
+p-locate@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/p-locate/-/p-locate-3.0.0.tgz#322d69a05c0264b25997d9f40cd8a891ab0064a4"
+  integrity sha512-x+12w/To+4GFfgJhBEpiDcLozRJGegY+Ei7/z0tSLkMmxGZNybVMSfWj9aJn8Z5Fc7dBUNJOOVgPv2H7IwulSQ==
+  dependencies:
+    p-limit "^2.0.0"
+
 p-queue@^7.1.0:
   version "7.1.0"
   resolved "https://registry.yarnpkg.com/p-queue/-/p-queue-7.1.0.tgz#c2bb28f8dc0ebf3fadb985b8706cf2ce5fe5f275"
@@ -631,11 +660,28 @@ p-timeout@^5.0.0:
   resolved "https://registry.yarnpkg.com/p-timeout/-/p-timeout-5.0.0.tgz#0f5dc08422e7243f8317669c461734cd1257a8dc"
   integrity sha512-z+bU/N7L1SABsqKnQzvAnINgPX7NHdzwUV+gHyJE7VGNDZSr03rhcPODCZSWiiT9k+gf74QPmzcZzqJRvxYZow==
 
+p-try@^2.0.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/p-try/-/p-try-2.2.0.tgz#cb2868540e313d61de58fafbe35ce9004d5540e6"
+  integrity sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ==
+
+path-exists@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/path-exists/-/path-exists-3.0.0.tgz#ce0ebeaa5f78cb18925ea7d810d7b59b010fd515"
+  integrity sha1-zg6+ql94yxiSXqfYENe1mwEP1RU=
+
 path-is-absolute@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
   integrity sha1-F0uSaHNVNP+8es5r9TpanhtcX18=
 
+pkg-up@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/pkg-up/-/pkg-up-3.1.0.tgz#100ec235cc150e4fd42519412596a28512a0def5"
+  integrity sha512-nDywThFk1i4BQK4twPQ6TA4RT8bDY96yeuCVBWL3ePARCiEKDRSrNGbFIgUJpLp+XeIR65v8ra7WuJOFUBtkMA==
+  dependencies:
+    find-up "^3.0.0"
+
 prettier@^2.3.2:
   version "2.3.2"
   resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.3.2.tgz#ef280a05ec253712e486233db5c6f23441e7342d"