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backend/node_modules/fast-check/lib/arbitrary/letrec.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.letrec = letrec;
+const LazyArbitrary_1 = require("./_internals/LazyArbitrary");
+const globals_1 = require("../utils/globals");
+const safeObjectCreate = Object.create;
+function letrec(builder) {
+    const lazyArbs = safeObjectCreate(null);
+    const tie = (key) => {
+        if (!(0, globals_1.safeHasOwnProperty)(lazyArbs, key)) {
+            lazyArbs[key] = new LazyArbitrary_1.LazyArbitrary(String(key));
+        }
+        return lazyArbs[key];
+    };
+    const strictArbs = builder(tie);
+    for (const key in strictArbs) {
+        if (!(0, globals_1.safeHasOwnProperty)(strictArbs, key)) {
+            continue;
+        }
+        const lazyAtKey = lazyArbs[key];
+        const lazyArb = lazyAtKey !== undefined ? lazyAtKey : new LazyArbitrary_1.LazyArbitrary(key);
+        lazyArb.underlying = strictArbs[key];
+        lazyArbs[key] = lazyArb;
+    }
+    return strictArbs;
+}