format prompt values revamp

packages/components/nodes/chains/LLMChain/LLMChain.ts

@@ -50,7 +50,7 @@ class LLMChain_Chains implements INode {
             {
                 label: 'Output Prediction',
                 name: 'outputPrediction',
-                baseClasses: ['string']
+                baseClasses: ['string', 'json']
             }
         ]
     }

packages/components/nodes/prompts/ChatPromptTemplate/ChatPromptTemplate.ts

@@ -38,12 +38,7 @@ class ChatPromptTemplate_Prompts implements INode {
             {
                 label: 'Format Prompt Values',
                 name: 'promptValues',
-                type: 'string',
-                rows: 4,
-                placeholder: `{
-  "input_language": "English",
-  "output_language": "French"
-}`,
+                type: 'json',
                 optional: true,
                 acceptVariable: true,
                 list: true

packages/components/nodes/prompts/PromptTemplate/PromptTemplate.ts

@@ -31,12 +31,7 @@ class PromptTemplate_Prompts implements INode {
             {
                 label: 'Format Prompt Values',
                 name: 'promptValues',
-                type: 'string',
-                rows: 4,
-                placeholder: `{
-  "input_language": "English",
-  "output_language": "French"
-}`,
+                type: 'json',
                 optional: true,
                 acceptVariable: true,
                 list: true

packages/components/src/utils.ts

@@ -245,47 +245,6 @@ export class CustomChainHandler extends BaseCallbackHandler {
     }
 }
 
-export const returnJSONStr = (jsonStr: string): string => {
-    let jsonStrArray = jsonStr.split(':')
-
-    let wholeString = ''
-    for (let i = 0; i < jsonStrArray.length; i++) {
-        if (jsonStrArray[i].includes(',') && jsonStrArray[i + 1] !== undefined) {
-            const splitValueAndTitle = jsonStrArray[i].split(',')
-            const value = splitValueAndTitle[0]
-            const newTitle = splitValueAndTitle[1]
-            wholeString += handleEscapeDoubleQuote(value) + ',' + newTitle + ':'
-        } else {
-            wholeString += wholeString === '' ? jsonStrArray[i] + ':' : handleEscapeDoubleQuote(jsonStrArray[i])
-        }
-    }
-    return wholeString
-}
-
-const handleEscapeDoubleQuote = (value: string): string => {
-    let newValue = ''
-    if (value.includes('"')) {
-        const valueArray = value.split('"')
-        for (let i = 0; i < valueArray.length; i++) {
-            if ((i + 1) % 2 !== 0) {
-                switch (valueArray[i]) {
-                    case '':
-                        newValue += '"'
-                        break
-                    case '}':
-                        newValue += '"}'
-                        break
-                    default:
-                        newValue += '\\"' + valueArray[i] + '\\"'
-                }
-            } else {
-                newValue += valueArray[i]
-            }
-        }
-    }
-    return newValue === '' ? value : newValue
-}
-
 export const availableDependencies = [
     '@dqbd/tiktoken',
     '@getzep/zep-js',