fix: expose xyEnsureFloat64 (#226)

Author: jobo322

src/__tests__/__snapshots__/index.test.ts.snap

@@ -108,6 +108,7 @@ exports[`test existence of exported functions 1`] = `
   "xyToXYObject",
   "xyUniqueX",
   "xyWeightedMerge",
+  "xyEnsureFloat64",
   "xy2ToXY",
   "xreimSortX",
   "xreimZeroFilling",

src/xy/__tests__/xyEnsureFloat64.test.ts

@@ -1,4 +1,4 @@
-import { xyEnsureFloat64 } from '../xyEnsureFloat64';
+import { xyEnsureFloat64 } from '../index';
 
 test('normal array', () => {
   const data = {

src/xy/index.ts

@@ -38,3 +38,4 @@ export * from './xyToXYArray';
 export * from './xyToXYObject';
 export * from './xyUniqueX';
 export * from './xyWeightedMerge';
+export * from './xyEnsureFloat64';