Начало наработок

node_modules/rxjs/_esm5/util/isNumeric.js

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+/** PURE_IMPORTS_START .._util_isArray PURE_IMPORTS_END */
+import { isArray } from '../util/isArray';
+export function isNumeric(val) {
+    // parseFloat NaNs numeric-cast false positives (null|true|false|"")
+    // ...but misinterprets leading-number strings, particularly hex literals ("0x...")
+    // subtraction forces infinities to NaN
+    // adding 1 corrects loss of precision from parseFloat (#15100)
+    return !isArray(val) && (val - parseFloat(val) + 1) >= 0;
+}
+;
+//# sourceMappingURL=isNumeric.js.map