diff --git a/.changeset/config.json b/.changeset/config.json
index 2d5ade70dcb..1646a33836b 100644
--- a/.changeset/config.json
+++ b/.changeset/config.json
@@ -1,6 +1,6 @@
 {
   "$schema": "https://unpkg.com/@changesets/config@1.1.0/schema.json",
-  "changelog": ["@changesets/changelog-github", { "repo": "firebase/firebase-js-sdk"}],
+  "changelog": ["../repo-scripts/changelog-generator", { "repo": "firebase/firebase-js-sdk"}],
   "commit": false,
   "linked": [],
   "access": "public",
diff --git a/package.json b/package.json
index 8c8b9402310..7470b849037 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,8 @@
     "lint": "lerna run --scope @firebase/* --scope rxfire lint",
     "size-report": "node scripts/report_binary_size.js",
     "api-report": "lerna run --scope @firebase/*-exp api-report",
-    "docgen:exp": "node scripts/exp/docgen.js"
+    "docgen:exp": "node scripts/exp/docgen.js",
+    "postinstall": "yarn --cwd repo-scripts/changelog-generator build"
   },
   "repository": {
     "type": "git",
@@ -57,7 +58,8 @@
   "workspaces": [
     "packages/*",
     "packages-exp/*",
-    "integration/*"
+    "integration/*",
+    "repo-scripts/*"
   ],
   "devDependencies": {
     "@changesets/changelog-github": "0.2.6",
diff --git a/repo-scripts/changelog-generator/.eslintrc.js b/repo-scripts/changelog-generator/.eslintrc.js
new file mode 100644
index 00000000000..ca80aa0f69a
--- /dev/null
+++ b/repo-scripts/changelog-generator/.eslintrc.js
@@ -0,0 +1,26 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+module.exports = {
+  extends: '../../config/.eslintrc.js',
+  parserOptions: {
+    project: 'tsconfig.json',
+    // to make vscode-eslint work with monorepo
+    // https://github.com/typescript-eslint/typescript-eslint/issues/251#issuecomment-463943250
+    tsconfigRootDir: __dirname
+  }
+};
diff --git a/repo-scripts/changelog-generator/README.md b/repo-scripts/changelog-generator/README.md
new file mode 100644
index 00000000000..a5d605b7973
--- /dev/null
+++ b/repo-scripts/changelog-generator/README.md
@@ -0,0 +1,3 @@
+# @firebase/changelog-generator
+
+It works as a plugin for @changesets/cli to generate changelog entries(via running `changeset version`).
diff --git a/repo-scripts/changelog-generator/index.ts b/repo-scripts/changelog-generator/index.ts
new file mode 100644
index 00000000000..d23b90c3aec
--- /dev/null
+++ b/repo-scripts/changelog-generator/index.ts
@@ -0,0 +1,110 @@
+/**
+ * @license
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { ChangelogFunctions } from '@changesets/types';
+import { getInfo } from '@changesets/get-github-info';
+import fetch from 'node-fetch';
+
+const changelogFunctions: ChangelogFunctions = {
+  getDependencyReleaseLine: async (
+    changesets,
+    dependenciesUpdated,
+    options
+  ) => {
+    if (!options.repo) {
+      throw new Error(
+        'Please provide a repo to this changelog generator like this:\n"changelog": ["@changesets/changelog-github", { "repo": "org/repo" }]'
+      );
+    }
+    if (dependenciesUpdated.length === 0) return '';
+
+    const changesetLink = `- Updated dependencies [${(
+      await Promise.all(
+        changesets.map(async cs => {
+          if (cs.commit) {
+            let { links } = await getInfo({
+              repo: options.repo,
+              commit: cs.commit
+            });
+            return links.commit;
+          }
+        })
+      )
+    )
+      .filter(_ => _)
+      .join(', ')}]:`;
+
+    const updatedDepenenciesList = dependenciesUpdated.map(
+      dependency => `  - ${dependency.name}@${dependency.newVersion}`
+    );
+
+    return [changesetLink, ...updatedDepenenciesList].join('\n');
+  },
+  getReleaseLine: async (changeset, type, options) => {
+    if (!options || !options.repo) {
+      throw new Error(
+        'Please provide a repo to this changelog generator like this:\n"changelog": ["@changesets/changelog-github", { "repo": "org/repo" }]'
+      );
+    }
+    const [firstLine, ...futureLines] = changeset.summary
+      .split('\n')
+      .map(l => l.trimRight());
+
+    if (changeset.commit) {
+      let { pull: pullNumber, links } = await getInfo({
+        repo: options.repo,
+        commit: changeset.commit
+      });
+
+      let fixedIssueLink = null;
+      // If the summary didn't mention any issue, we will look at the PR body to try to generate one automatically
+      if (!/issues\/[\d+]/i.test(changeset.summary) && pullNumber) {
+        fixedIssueLink = await getFixedIssueLink(pullNumber, options.repo);
+      }
+
+      return `\n\n- ${links.commit}${
+        links.pull === null ? '' : ` ${links.pull}`
+      }${
+        fixedIssueLink === null ? '' : ` ${fixedIssueLink}`
+      } - ${firstLine}\n${futureLines.map(l => `  ${l}`).join('\n')}`;
+    } else {
+      return `\n\n- ${firstLine}\n${futureLines.map(l => `  ${l}`).join('\n')}`;
+    }
+  }
+};
+
+const fixedIssueRegex = /(close|closes|closed|fix|fixes|fixed|resolve|resolves|resolved) [^\s]*(#|issues\/)([\d]+)/i;
+async function getFixedIssueLink(
+  prNumber: number,
+  repo: string
+): Promise<string> {
+  const { body }: { body: string } = await fetch(
+    `https://api.github.com/repos/${repo}/pulls/${prNumber}?access_token=${process.env.GITHUB_TOKEN}`,
+    {
+      method: 'GET'
+    }
+  ).then(data => data.json());
+
+  const match = fixedIssueRegex.exec(body);
+  if (!match) {
+    return '';
+  }
+  const issueNumber = match[3];
+  return `(fixes [#${issueNumber}](https://github.com/firebase/firebase-js-sdk/issues/${issueNumber}))`;
+}
+
+exports.default = changelogFunctions;
diff --git a/repo-scripts/changelog-generator/package.json b/repo-scripts/changelog-generator/package.json
new file mode 100644
index 00000000000..7a5331741f4
--- /dev/null
+++ b/repo-scripts/changelog-generator/package.json
@@ -0,0 +1,43 @@
+{
+  "name": "@firebase/changelog-generator",
+  "version": "0.1.0",
+  "private": true,
+  "description": "A package for generating changelog",
+  "author": "Firebase <firebase-support@google.com> (https://firebase.google.com/)",
+  "main": "dist/index.js",
+  "files": [
+    "dist"
+  ],
+  "scripts": {
+    "lint": "eslint -c .eslintrc.js '**/*.ts' --ignore-path '../../.gitignore'",
+    "lint:fix": "eslint --fix -c .eslintrc.js '**/*.ts' --ignore-path '../../.gitignore'",
+    "build": "tsc",
+    "build:dev": "tsc -w",
+    "test": "yarn type-check",
+    "prepare": "yarn build"
+  },
+  "dependencies": {
+    "@changesets/types": "3.1.0",
+    "@changesets/get-github-info": "0.4.3",
+    "node-fetch": "2.6.0",
+    "@types/node-fetch": "2.5.7"
+  },
+  "license": "Apache-2.0",
+  "devDependencies": {
+    "typescript": "3.9.6"
+  },
+  "repository": {
+    "directory": "repo-scripts/changelog-generator",
+    "type": "git",
+    "url": "https://github.com/firebase/firebase-js-sdk.git"
+  },
+  "bugs": {
+    "url": "https://github.com/firebase/firebase-js-sdk/issues"
+  },
+  "nyc": {
+    "extension": [
+      ".ts"
+    ],
+    "reportDir": "./coverage/node"
+  }
+}
diff --git a/repo-scripts/changelog-generator/tsconfig.json b/repo-scripts/changelog-generator/tsconfig.json
new file mode 100644
index 00000000000..35a1f5fcced
--- /dev/null
+++ b/repo-scripts/changelog-generator/tsconfig.json
@@ -0,0 +1,17 @@
+{
+  "compilerOptions": {
+    "strict": true,
+    "outDir": "dist",
+    "lib": [
+      "ESNext"
+    ],
+    "module": "CommonJS",
+    "moduleResolution": "node",
+    "esModuleInterop": true,
+    "resolveJsonModule": true,
+    "target": "es5",
+    "typeRoots": [
+      "../../node_modules/@types"
+    ]
+  }
+}
\ No newline at end of file
diff --git a/scripts/exp/docgen.js b/scripts/exp/docgen.js
index af6cb23b1fc..96d4f63696b 100644
--- a/scripts/exp/docgen.js
+++ b/scripts/exp/docgen.js
@@ -38,7 +38,7 @@ async function generateDocs() {
     fs.mkdirSync(tmpDir);
   }
 
-  // TODO: Throw error if path doesn't exist, once all packages add markdown support.
+  // TODO: Throw error if path doesn't exist once all packages add markdown support.
   const apiJsonDirectories = (
     await mapWorkspaceToPackages([
       `${projectRoot}/packages/*`,
diff --git a/yarn.lock b/yarn.lock
index a8923b24a96..d76b22c3bd6 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1141,7 +1141,7 @@
     fs-extra "^7.0.1"
     semver "^5.4.1"
 
-"@changesets/get-github-info@^0.4.3":
+"@changesets/get-github-info@0.4.3", "@changesets/get-github-info@^0.4.3":
   version "0.4.3"
   resolved "https://registry.npmjs.org/@changesets/get-github-info/-/get-github-info-0.4.3.tgz#ed3c3ca76dcbaf4c98aa950a20fc5438da1a2f2c"
   integrity sha512-hMtNDn4Kp2wDUohYipBIH3qGMxONZ3wEoaGtrflXHCSu57iulBcOSQ1oHRYSCJ9pO87dYQHA2XRUfrZUnqRfKA==
@@ -1219,16 +1219,16 @@
     fs-extra "^7.0.1"
     p-filter "^2.1.0"
 
+"@changesets/types@3.1.0", "@changesets/types@^3.1.0":
+  version "3.1.0"
+  resolved "https://registry.npmjs.org/@changesets/types/-/types-3.1.0.tgz#68957af45a0be29f0908e20a990ecf382282e1f1"
+  integrity sha512-czOfaaxr5aGnNwVRgWr3n2CKoc3iRTfrHM4wUHQ+rBlLKKk9NzGwZ2EPsXkp4CUw4hWHGEOi8hdeIfDTWKrWgg==
+
 "@changesets/types@^3.0.0":
   version "3.0.0"
   resolved "https://registry.npmjs.org/@changesets/types/-/types-3.0.0.tgz#3804662aa455c1622282ec3253cf6ddd309eee65"
   integrity sha512-9Mh/JqkX3nkjfu53ESM3UjFmR2meOo4Zw+Tp4vnon0XYtMurk7KjZG5L+J0fD3+Qx0A2FFTZrgydPwiHR4GrXQ==
 
-"@changesets/types@^3.1.0":
-  version "3.1.0"
-  resolved "https://registry.npmjs.org/@changesets/types/-/types-3.1.0.tgz#68957af45a0be29f0908e20a990ecf382282e1f1"
-  integrity sha512-czOfaaxr5aGnNwVRgWr3n2CKoc3iRTfrHM4wUHQ+rBlLKKk9NzGwZ2EPsXkp4CUw4hWHGEOi8hdeIfDTWKrWgg==
-
 "@changesets/write@^0.1.3":
   version "0.1.3"
   resolved "https://registry.npmjs.org/@changesets/write/-/write-0.1.3.tgz#00ae575af50274773d7493e77fb96838a08ad8ad"
@@ -2620,6 +2620,14 @@
   resolved "https://registry.npmjs.org/@types/mocha/-/mocha-7.0.2.tgz#b17f16cf933597e10d6d78eae3251e692ce8b0ce"
   integrity sha512-ZvO2tAcjmMi8V/5Z3JsyofMe3hasRcaw88cto5etSVMwVQfeivGAlEYmaQgceUSVYFofVjT+ioHsATjdWcFt1w==
 
+"@types/node-fetch@2.5.7":
+  version "2.5.7"
+  resolved "https://registry.npmjs.org/@types/node-fetch/-/node-fetch-2.5.7.tgz#20a2afffa882ab04d44ca786449a276f9f6bbf3c"
+  integrity sha512-o2WVNf5UhWRkxlf6eq+jMZDu7kjgpgJfl4xVNlvryc95O/6F2ld8ztKX+qu+Rjyet93WAWm5LjeX9H5FGkODvw==
+  dependencies:
+    "@types/node" "*"
+    form-data "^3.0.0"
+
 "@types/node@*", "@types/node@>= 8":
   version "13.11.0"
   resolved "https://registry.npmjs.org/@types/node/-/node-13.11.0.tgz#390ea202539c61c8fa6ba4428b57e05bc36dc47b"
@@ -4858,7 +4866,7 @@ combine-source-map@^0.8.0, combine-source-map@~0.8.0:
     lodash.memoize "~3.0.3"
     source-map "~0.5.3"
 
-combined-stream@^1.0.6, combined-stream@~1.0.6:
+combined-stream@^1.0.6, combined-stream@^1.0.8, combined-stream@~1.0.6:
   version "1.0.8"
   resolved "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz#c3d45a8b34fd730631a110a8a2520682b31d5a7f"
   integrity sha512-FQN4MRfuJeHf7cBbBMJFXhKSDq+2kAArBlmRBvcvFE5BB1HZKXtSFASDhdlz9zOYwxh8lDdnvmMOe/+5cdoEdg==
@@ -7090,6 +7098,15 @@ form-data@^2.5.0:
     combined-stream "^1.0.6"
     mime-types "^2.1.12"
 
+form-data@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.npmjs.org/form-data/-/form-data-3.0.0.tgz#31b7e39c85f1355b7139ee0c647cf0de7f83c682"
+  integrity sha512-CKMFDglpbMi6PyN+brwB9Q/GOw0eAnsrEZDgcsH5Krhz5Od/haKHAX0NmQfha2zPPz0JpWzA7GJHGSnvCRLWsg==
+  dependencies:
+    asynckit "^0.4.0"
+    combined-stream "^1.0.8"
+    mime-types "^2.1.12"
+
 form-data@~2.3.2:
   version "2.3.3"
   resolved "https://registry.npmjs.org/form-data/-/form-data-2.3.3.tgz#dcce52c05f644f298c6a7ab936bd724ceffbf3a6"
@@ -14195,7 +14212,6 @@ symbol-observable@^1.1.0:
 
 "sync-promise@git+https://github.com/brettz9/sync-promise.git#full-sync-missing-promise-features":
   version "1.0.1"
-  uid "25845a49a00aa2d2c985a5149b97c86a1fcdc75a"
   resolved "git+https://github.com/brettz9/sync-promise.git#25845a49a00aa2d2c985a5149b97c86a1fcdc75a"
 
 syntax-error@^1.1.1:
@@ -15509,7 +15525,6 @@ websocket-extensions@>=0.1.1:
 
 "websql@git+https://github.com/brettz9/node-websql.git#configurable-secure2":
   version "1.0.0"
-  uid "5149bc0763376ca757fc32dc74345ada0467bfbb"
   resolved "git+https://github.com/brettz9/node-websql.git#5149bc0763376ca757fc32dc74345ada0467bfbb"
   dependencies:
     argsarray "^0.0.1"