WIP feature/ Dashboard_breadcrumbs & fix_localize

client/src/lang/printValue.js

@@ -0,0 +1,48 @@
+const toString = Object.prototype.toString;
+const errorToString = Error.prototype.toString;
+const regExpToString = RegExp.prototype.toString;
+const symbolToString =
+  typeof Symbol !== 'undefined' ? Symbol.prototype.toString : () => '';
+const SYMBOL_REGEXP = /^Symbol\((.*)\)(.*)$/;
+
+function printNumber(val) {
+  if (val != +val) return 'NaN';
+  const isNegativeZero = val === 0 && 1 / val < 0;
+  return isNegativeZero ? '-0' : '' + val;
+}
+
+function printSimpleValue(val, quoteStrings = false) {
+  if (val == null || val === true || val === false) return '' + val;
+
+  const typeOf = typeof val;
+  if (typeOf === 'number') return printNumber(val);
+  if (typeOf === 'string') return quoteStrings ? `"${val}"` : val;
+  if (typeOf === 'function')
+    return '[Function ' + (val.name || 'anonymous') + ']';
+  if (typeOf === 'symbol')
+    return symbolToString.call(val).replace(SYMBOL_REGEXP, 'Symbol($1)');
+
+  const tag = toString.call(val).slice(8, -1);
+  if (tag === 'Date')
+    return isNaN(val.getTime()) ? '' + val : val.toISOString(val);
+  if (tag === 'Error' || val instanceof Error)
+    return '[' + errorToString.call(val) + ']';
+  if (tag === 'RegExp') return regExpToString.call(val);
+
+  return null;
+}
+
+export default function printValue(value, quoteStrings) {
+  let result = printSimpleValue(value, quoteStrings);
+  if (result !== null) return result;
+
+  return JSON.stringify(
+    value,
+    function(key, value) {
+      let result = printSimpleValue(this[key], quoteStrings);
+      if (result !== null) return result;
+      return value;
+    },
+    2,
+  );
+}