Create jsonStringify.js

JavaScript/Programmes/jsonStringify.js

@@ -0,0 +1,54 @@
+// Online Javascript Editor for free
+// Write, Edit and Run your Javascript code using JS Online Compiler
+function isCyclic(input){
+    const seen = new Set()
+    function helper(value = input){
+        if(typeof value !== "object" || value === null){
+            return false
+        } 
+        seen.add(value)
+        return Object.values(value).some((val) => seen.has(val) || helper(val))
+    }
+    return helper()
+}
+
+function jsonStringify(data){
+    const typeofData = typeof data
+    if(isCyclic(data)){
+        throw new TypeError('Converting circular structure to JSON');
+    }
+    if (typeof value === 'bigint') {
+        throw new TypeError('Do not know how to serialize a BigInt');
+    }
+    if(data === '' || data === undefined || typeofData === 'symbol' || typeofData === 'function'){
+        return undefined
+    }
+    if(data === null || data === Infinity || data === -Infinity || data !== data){
+        return 'null'
+    }
+    if(typeofData === "string"){
+        return `"${data}"`
+    }
+    if(typeofData === "number"){
+        return `'${data}'`
+    }
+    if(Array.isArray(data)){
+        const res = data.map(d => jsonStringify(d))
+        return `'[${res.join(',')}]'`
+    }
+    if(typeofData instanceof Date){
+        return `${data.toISOString()}`
+    }
+    if(typeofData === "object"){
+        const res = Object.entries(data).map(([key,val]) => {
+            // console.log(key,val)
+            if(val){
+                const d = jsonStringify(val)
+                return `"${key}":${d}`
+            }
+        }).filter(d => d !== undefined)
+        return `'{${res.join(',')}}'`
+    }
+}
+
+console.log(jsonStringify(() => {}))