diff --git a/package.json b/package.json
index af8e05804b56..1875062cfe58 100644
--- a/package.json
+++ b/package.json
@@ -48,6 +48,7 @@
     "regenerator-runtime": "^0.10.3",
     "rimraf": "^2.5.4",
     "slash": "^1.0.0",
+    "string-length": "^1.0.1",
     "strip-ansi": "^3.0.1",
     "typescript": "^2.2.2"
   },
diff --git a/scripts/build.js b/scripts/build.js
index d3fdac401e85..45425f8d52e9 100644
--- a/scripts/build.js
+++ b/scripts/build.js
@@ -25,9 +25,10 @@ const mkdirp = require('mkdirp');
 const babel = require('babel-core');
 const chalk = require('chalk');
 const micromatch = require('micromatch');
-
+const stringLength = require('string-length');
 const getPackages = require('./_getPackages');
 
+const OK = chalk.reset.inverse.bold.green(' DONE ');
 const SRC_DIR = 'src';
 const BUILD_DIR = 'build';
 const BUILD_ES5_DIR = 'build-es5';
@@ -46,8 +47,9 @@ const babelEs5Options = Object.assign(
   {plugins: [...babelNodeOptions.plugins, 'transform-runtime']}
 );
 
-const fixedWidth = str => {
-  const WIDTH = 80;
+const adjustToTerminalWidth = str => {
+  const columns = process.stdout.columns || 80;
+  const WIDTH = columns - stringLength(OK) + 1;
   const strs = str.match(new RegExp(`(.{1,${WIDTH}})`, 'g'));
   let lastString = strs[strs.length - 1];
   if (lastString.length < WIDTH) {
@@ -73,10 +75,10 @@ function buildPackage(p) {
   const pattern = path.resolve(srcDir, '**/*');
   const files = glob.sync(pattern, {nodir: true});
 
-  process.stdout.write(fixedWidth(`${path.basename(p)}\n`));
+  process.stdout.write(adjustToTerminalWidth(`${path.basename(p)}\n`));
 
   files.forEach(file => buildFile(file, true));
-  process.stdout.write(`[  ${chalk.green('OK')}  ]\n`);
+  process.stdout.write(`${OK}\n`);
 }
 
 function buildFile(file, silent) {
@@ -141,7 +143,7 @@ const files = process.argv.slice(2);
 if (files.length) {
   files.forEach(buildFile);
 } else {
-  process.stdout.write(chalk.bold.inverse('Building packages\n'));
+  process.stdout.write(chalk.inverse(' Building packages \n'));
   getPackages().forEach(buildPackage);
   process.stdout.write('\n');
 }
diff --git a/yarn.lock b/yarn.lock
index 117a88344d03..eb910d6ee371 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1304,13 +1304,13 @@ debug@2.2.0:
   dependencies:
     ms "0.7.1"
 
-debug@^2.1.1, debug@^2.2.0:
+debug@^2.1.1:
   version "2.6.3"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.3.tgz#0f7eb8c30965ec08c72accfa0130c8b79984141d"
   dependencies:
     ms "0.7.2"
 
-debug@^2.6.8:
+debug@^2.2.0, debug@^2.6.8:
   version "2.6.8"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.8.tgz#e731531ca2ede27d188222427da17821d68ff4fc"
   dependencies:
@@ -1941,7 +1941,7 @@ glob-parent@^2.0.0:
   dependencies:
     is-glob "^2.0.0"
 
-glob@7.1.1, glob@^7.0.3, glob@^7.0.5, glob@^7.0.6, glob@^7.1.1:
+glob@7.1.1, glob@^7.1.1:
   version "7.1.1"
   resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.1.tgz#805211df04faaf1c63a3600306cdf5ade50b2ec8"
   dependencies:
@@ -1952,7 +1952,7 @@ glob@7.1.1, glob@^7.0.3, glob@^7.0.5, glob@^7.0.6, glob@^7.1.1:
     once "^1.3.0"
     path-is-absolute "^1.0.0"
 
-glob@^7.1.2:
+glob@^7.0.3, glob@^7.0.5, glob@^7.0.6, glob@^7.1.2:
   version "7.1.2"
   resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.2.tgz#c19c9df9a028702d678612384a6552404c636d15"
   dependencies:
@@ -2464,14 +2464,7 @@ js-tokens@^3.0.0:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.1.tgz#08e9f132484a2c45a30907e9dc4d5567b7f114d7"
 
-js-yaml@^3.7.0:
-  version "3.8.3"
-  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.8.3.tgz#33a05ec481c850c8875929166fe1beb61c728766"
-  dependencies:
-    argparse "^1.0.7"
-    esprima "^3.1.1"
-
-js-yaml@^3.8.4:
+js-yaml@^3.7.0, js-yaml@^3.8.4:
   version "3.8.4"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.8.4.tgz#520b4564f86573ba96662af85a8cafa7b4b5a6f6"
   dependencies:
@@ -3631,6 +3624,12 @@ state-toggle@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/state-toggle/-/state-toggle-1.0.0.tgz#d20f9a616bb4f0c3b98b91922d25b640aa2bc425"
 
+string-length@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/string-length/-/string-length-1.0.1.tgz#56970fb1c38558e9e70b728bf3de269ac45adfac"
+  dependencies:
+    strip-ansi "^3.0.0"
+
 string-width@^1.0.1, string-width@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/string-width/-/string-width-1.0.2.tgz#118bdf5b8cdc51a2a7e70d211e07e2b0b9b107d3"