Working on API surface.

packages/js/core/dist/readers/js-string.cjs

@@ -0,0 +1,2 @@
+"use strict";Object.defineProperties(exports,{__esModule:{value:!0},[Symbol.toStringTag]:{value:"Module"}});function i(r,n=0){const t=Array.isArray(r)?r:r.split(`
+`),e={index:n-1,next:()=>(e.index++,e.index>=t.length?null:t[e.index]),clone:l=>i(r,l==null?n:e.index)};return e}exports.createStringReader=i;