build: properly resolve types for dist files

lib/node_modules/@stdlib/_tools/scripts/publish_packages.js

@@ -1084,9 +1084,11 @@ function publish( pkg, clbk ) {
 	function publishToNPM() {
 		var fmtProdMsgVersion;
 		var jscodeshift;
+		var contents;
 		var command;
 		var escaped;
 		var cliPkg;
+		var alias;
 		var found;
 		var opts;
 		var dep;
@@ -1162,21 +1164,43 @@ function publish( pkg, clbk ) {
 				}
 			}
 		}
+		// Add `@stdlib/error-tools-fmtprodmsg` in package.json if the package depends on `@stdlib/string-format`:
+		if ( pkgJSON.dependencies[ '@stdlib/string-format' ] ) {
+			fmtProdMsgVersion = npmVersion( '@stdlib/error-tools-fmtprodmsg' );
+			pkgJSON.dependencies[ '@stdlib/error-tools-fmtprodmsg' ] = fmtProdMsgVersion;
+			deps.push( '@stdlib/error-tools-fmtprodmsg' );
+		}
+
 		// Transform error messages and save files to `dist` subdirectory:
-		command = 'cp -r lib dist';
+		command = 'cp -r lib tmp && mkdir dist';
 		shell( command, opts );
 		jscodeshift = join( rootDir(), 'node_modules', '.bin', 'jscodeshift' );
-		command = 'STDLIB_PKG=\'@stdlib/'+distPkg+'\' '+jscodeshift+' ./dist/**/*.js ./dist/*.js -t '+join( __dirname, 'transform.js' );
+		command = 'STDLIB_PKG=\'@stdlib/'+distPkg+'\' '+jscodeshift+' ./tmp/**/*.js ./tmp/*.js -t '+join( __dirname, 'transform.js' );
 		debug( 'Executing command: %s', command );
 		shell( command, opts );
-		command = 'find ./dist -name "*.js" -exec sed -E -i "1i\\/\\*\\* \\@license '+pkgJSON.license+' \\*\\/\n" {} \\;';
+		command = 'find ./tmp -name "*.js" -exec sed -E -i "1i\\/\\*\\* \\@license '+pkgJSON.license+' \\*\\/\n" {} \\;';
+		shell( command, opts );
+		command = [
+			'npx esbuild tmp/index.js --bundle --format=cjs',
+			'--sourcemap --minify --platform=node --outfile=dist/index.js',
+			'--external:'+deps.join( ' --external:' )
+		].join( ' ' );
+		debug( 'Executing command: %s', command );
+		shell( command, opts );
+		command = 'rm -rf tmp';
 		shell( command, opts );
 
-		// Add `@stdlib/error-tools-fmtprodmsg` in package.json if the package depends on `@stdlib/string-format`:
-		if ( pkgJSON.dependencies[ '@stdlib/string-format' ] ) {
-			fmtProdMsgVersion = npmVersion( '@stdlib/error-tools-fmtprodmsg' );
-			pkgJSON.dependencies[ '@stdlib/error-tools-fmtprodmsg' ] = fmtProdMsgVersion;
-		}
+		// Extract the alias from the Typescript definition file (after `export =` but before the semicolon):
+		command = 'grep -oP \'(?<=export = ).*?(?=;)\' docs/types/index.d.ts';
+		alias = trim( shell( command, opts ).toString() );
+
+		// Create the contents of a `index.d.ts` file in `dist` subdirectory that reexports `docs/types/index.d.ts` (we don't want to duplicate type definitions, so we just reexport them):
+		contents = [
+			'/// <reference path="../docs/types/index.d.ts" />',
+			'import '+alias+' from \'../docs/types/index\';',
+			'export = '+alias+';'
+		].join( '\n' );
+		writeFileSync( join( dist, 'dist', 'index.d.ts' ), contents );
 
 		// Replace GitHub MathJax equations with SVGs:
 		command = 'find . -type f -name \'*.md\' -print0 | xargs -0 perl -0777 -i -pe \'s/```math\\n([\\s\\S]+?)\\n```\\n\\n//g\'';