diff --git a/packages/core/index.js b/packages/core/index.js
index 7a74050..c5390ff 100644
--- a/packages/core/index.js
+++ b/packages/core/index.js
@@ -5,11 +5,23 @@ export {
   shuffle,
   shuffleInPlace
 } from './array';
-export {EventEmitterMixin as EventEmitter} from './event-emitter';
-export {inflate, deflate} from './flate';
-export {compose, fastApply} from './function';
-export {iterateForEach} from './iterator';
-export {merge} from './merge';
+export {
+  EventEmitterMixin as EventEmitter,
+} from './event-emitter';
+export {
+  inflate,
+  deflate,
+} from './flate';
+export {
+  compose,
+  fastApply
+} from './function';
+export {
+  iterateForEach,
+} from './iterator';
+export {
+  merge,
+} from './merge';
 export {
   mergeDiff,
   mergeDiffArray,
@@ -21,6 +33,16 @@ export {
   map as mapObject,
   fromEntries as objectFromEntries,
 } from './object';
-export {PropertyMixin as Property} from './property';
-export {TickingPromise} from './ticking-promise';
-export {virtualize, virtualizeStatic} from './virtualize';
+export {
+  PropertyMixin as Property,
+} from './property';
+export {
+  capitalize,
+} from './string';
+export {
+  TickingPromise,
+} from './ticking-promise';
+export {
+  virtualize,
+  virtualizeStatic,
+} from './virtualize';
diff --git a/packages/core/string.js b/packages/core/string.js
new file mode 100644
index 0000000..ab852bf
--- /dev/null
+++ b/packages/core/string.js
@@ -0,0 +1,3 @@
+export const capitalize = (string) => (
+  string ? `${string.slice(0, 1).toUpperCase()}${string.slice(1)}` : ''
+);
\ No newline at end of file