Initial commit

node_modules/fast-check/lib/esm/arbitrary/mapToConstant.js

@@ -0,0 +1,20 @@
+import { nat } from './nat.js';
+import { indexToMappedConstantMapperFor, indexToMappedConstantUnmapperFor, } from './_internals/mappers/IndexToMappedConstant.js';
+import { Error } from '../utils/globals.js';
+function computeNumChoices(options) {
+    if (options.length === 0)
+        throw new Error(`fc.mapToConstant expects at least one option`);
+    let numChoices = 0;
+    for (let idx = 0; idx !== options.length; ++idx) {
+        if (options[idx].num < 0)
+            throw new Error(`fc.mapToConstant expects all options to have a number of entries greater or equal to zero`);
+        numChoices += options[idx].num;
+    }
+    if (numChoices === 0)
+        throw new Error(`fc.mapToConstant expects at least one choice among options`);
+    return numChoices;
+}
+export function mapToConstant(...entries) {
+    const numChoices = computeNumChoices(entries);
+    return nat({ max: numChoices - 1 }).map(indexToMappedConstantMapperFor(entries), indexToMappedConstantUnmapperFor(entries));
+}