diff --git a/.github/.keepalive b/.github/.keepalive
deleted file mode 100644
index 24bd64b..0000000
--- a/.github/.keepalive
+++ /dev/null
@@ -1 +0,0 @@
-2023-08-01T01:09:10.750Z
diff --git a/.github/workflows/productionize.yml b/.github/workflows/productionize.yml
index 334eb59..91f2b93 100644
--- a/.github/workflows/productionize.yml
+++ b/.github/workflows/productionize.yml
@@ -82,21 +82,6 @@ jobs:
         id: transform-error-messages
         uses: stdlib-js/transform-errors-action@main
 
-      # Format error messages:
-      - name: 'Replace double quotes with single quotes in rewritten format string error messages'
-        run: |
-          find . -name "*.js" -exec sed -E -i "s/Error\( format\( \"([a-zA-Z0-9]+)\"/Error\( format\( '\1'/g" {} \;
-
-      # Format string literal error messages:
-      - name: 'Replace double quotes with single quotes in rewritten string literal error messages'
-        run: |
-          find . -name "*.js" -exec sed -E -i "s/Error\( format\(\"([a-zA-Z0-9]+)\"\)/Error\( format\( '\1' \)/g" {} \;
-
-      # Format code:
-      - name: 'Replace double quotes with single quotes in inserted `require` calls'
-        run: |
-          find . -name "*.js" -exec sed -E -i "s/require\( ?\"@stdlib\/error-tools-fmtprodmsg\" ?\);/require\( '@stdlib\/error-tools-fmtprodmsg' \);/g" {} \;
-
       # Change `@stdlib/string-format` to `@stdlib/error-tools-fmtprodmsg` in package.json if the former is a dependency, otherwise insert it as a dependency:
       - name: 'Update dependencies in package.json'
         run: |
diff --git a/dist/index.d.ts b/dist/index.d.ts
new file mode 100644
index 0000000..e1beb69
--- /dev/null
+++ b/dist/index.d.ts
@@ -0,0 +1,3 @@
+/// <reference path="../docs/types/index.d.ts" />
+import isFunction from '../docs/types/index';
+export = isFunction;
\ No newline at end of file
diff --git a/dist/index.js b/dist/index.js
new file mode 100644
index 0000000..c70cdfd
--- /dev/null
+++ b/dist/index.js
@@ -0,0 +1,5 @@
+"use strict";var n=function(t,r){return function(){return r||t((r={exports:{}}).exports,r),r.exports}};var i=n(function(a,e){
+var u=require('@stdlib/utils-type-of/dist');function s(t){return u(t)==="function"}e.exports=s
+});var c=i();module.exports=c;
+/** @license Apache-2.0 */
+//# sourceMappingURL=index.js.map
diff --git a/dist/index.js.map b/dist/index.js.map
new file mode 100644
index 0000000..dd8797b
--- /dev/null
+++ b/dist/index.js.map
@@ -0,0 +1,7 @@
+{
+  "version": 3,
+  "sources": ["../lib/main.js", "../lib/index.js"],
+  "sourcesContent": ["/**\n* @license Apache-2.0\n*\n* Copyright (c) 2018 The Stdlib Authors.\n*\n* Licensed under the Apache License, Version 2.0 (the \"License\");\n* you may not use this file except in compliance with the License.\n* You may obtain a copy of the License at\n*\n*    http://www.apache.org/licenses/LICENSE-2.0\n*\n* Unless required by applicable law or agreed to in writing, software\n* distributed under the License is distributed on an \"AS IS\" BASIS,\n* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n* See the License for the specific language governing permissions and\n* limitations under the License.\n*/\n\n'use strict';\n\n// MODULES //\n\nvar typeOf = require( '@stdlib/utils-type-of' );\n\n\n// MAIN //\n\n/**\n* Tests if a value is a function.\n*\n* @param {*} value - value to test\n* @returns {boolean} boolean indicating whether value is a function\n*\n* @example\n* function beep() {\n*     return 'beep';\n* }\n*\n* var bool = isFunction( beep );\n* // returns true\n*/\nfunction isFunction( value ) {\n\t// Note: cannot use `typeof` directly, as various browser engines incorrectly return `'function'` when operating on non-function objects, such as regular expressions and NodeLists.\n\treturn ( typeOf( value ) === 'function' );\n}\n\n\n// EXPORTS //\n\nmodule.exports = isFunction;\n", "/**\n* @license Apache-2.0\n*\n* Copyright (c) 2018 The Stdlib Authors.\n*\n* Licensed under the Apache License, Version 2.0 (the \"License\");\n* you may not use this file except in compliance with the License.\n* You may obtain a copy of the License at\n*\n*    http://www.apache.org/licenses/LICENSE-2.0\n*\n* Unless required by applicable law or agreed to in writing, software\n* distributed under the License is distributed on an \"AS IS\" BASIS,\n* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n* See the License for the specific language governing permissions and\n* limitations under the License.\n*/\n\n'use strict';\n\n/**\n* Test if a value is a function.\n*\n* @module @stdlib/assert-is-function\n*\n* @example\n* var isFunction = require( '@stdlib/assert-is-function' );\n*\n* function beep() {\n*     return 'beep';\n* }\n*\n* var bool = isFunction( beep );\n* // returns true\n*/\n\n// MODULES //\n\nvar main = require( './main.js' );\n\n\n// EXPORTS //\n\nmodule.exports = main;\n"],
+  "mappings": "uGAAA,IAAAA,EAAAC,EAAA,SAAAC,EAAAC,EAAA,cAsBA,IAAIC,EAAS,QAAS,uBAAwB,EAmB9C,SAASC,EAAYC,EAAQ,CAE5B,OAASF,EAAQE,CAAM,IAAM,UAC9B,CAKAH,EAAO,QAAUE,ICXjB,IAAIE,EAAO,IAKX,OAAO,QAAUA",
+  "names": ["require_main", "__commonJSMin", "exports", "module", "typeOf", "isFunction", "value", "main"]
+}
diff --git a/docs/types/index.d.ts b/docs/types/index.d.ts
index 0f58887..d95b949 100644
--- a/docs/types/index.d.ts
+++ b/docs/types/index.d.ts
@@ -16,7 +16,7 @@
 * limitations under the License.
 */
 
-// TypeScript Version: 2.0
+// TypeScript Version: 4.1
 
 /**
 * Tests if a value is a function.