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_node_modules/fast-check/lib/arbitrary/oneof.js

@@ -0,0 +1,28 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.oneof = oneof;
+const Arbitrary_1 = require("../check/arbitrary/definition/Arbitrary");
+const globals_1 = require("../utils/globals");
+const FrequencyArbitrary_1 = require("./_internals/FrequencyArbitrary");
+function isOneOfContraints(param) {
+    return (param != null &&
+        typeof param === 'object' &&
+        !('generate' in param) &&
+        !('arbitrary' in param) &&
+        !('weight' in param));
+}
+function toWeightedArbitrary(maybeWeightedArbitrary) {
+    if ((0, Arbitrary_1.isArbitrary)(maybeWeightedArbitrary)) {
+        return { arbitrary: maybeWeightedArbitrary, weight: 1 };
+    }
+    return maybeWeightedArbitrary;
+}
+function oneof(...args) {
+    const constraints = args[0];
+    if (isOneOfContraints(constraints)) {
+        const weightedArbs = (0, globals_1.safeMap)((0, globals_1.safeSlice)(args, 1), toWeightedArbitrary);
+        return FrequencyArbitrary_1.FrequencyArbitrary.from(weightedArbs, constraints, 'fc.oneof');
+    }
+    const weightedArbs = (0, globals_1.safeMap)(args, toWeightedArbitrary);
+    return FrequencyArbitrary_1.FrequencyArbitrary.from(weightedArbs, {}, 'fc.oneof');
+}