Scientific notation

hdyc-svelte/src/lib/utils/formatScientific.ts

@@ -0,0 +1,18 @@
+export interface ScientificNotationParts {
+  base: string;
+  exponent: string;
+}
+
+const SCIENTIFIC_REGEX = /^([+-]?\d+(?:\.\d+)?)(?:[eE]([+-]?\d+))$/;
+
+export function parseScientificNotation(value: string): ScientificNotationParts | null {
+  const match = SCIENTIFIC_REGEX.exec(value);
+  if (!match) {
+    return null;
+  }
+  const exponent = match[2].replace(/^\+/, '') || '0';
+  return {
+    base: match[1],
+    exponent,
+  };
+}