how to fix bad json javascript

Restu Wahyu Saputra answered on August 7, 2022 Popularity 1/10 Helpfulness 1/10

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how to fix bad json javascript

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npm i jsonrepair

Popularity 1/10 Helpfulness 1/10 Language javascript

Source: Grepper

Tags: javascript json

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Contributed on Aug 07 2022

Restu Wahyu Saputra

0 Answers Avg Quality 2/10

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function fixJSON(json){
    function bulkRegex(str, callback){
        if(callback && typeof callback === 'function'){
            return callback(str);
        }else if(callback && Array.isArray(callback)){
            for(let i = 0; i < callback.length; i++){
                if(callback[i] && typeof callback[i] === 'function'){
                    str = callback[i](str);
                }else{break;}
            }
            return str;
        }
        return str;
    }
    if(json && json !== ''){
        if(typeof json !== 'string'){
            try{
                json = JSON.stringify(json);
            }catch(e){return false;}
        }
        if(typeof json === 'string'){
            json = bulkRegex(json, false, [
                str => str.replace(/[\n\t]/gm, ''),
                str => str.replace(/,\}/gm, '}'),
                str => str.replace(/,\]/gm, ']'),
                str => {
                    str = str.split(/(?=[,\}\]])/g);
                    str = str.map(s => {
                        if(s.includes(':') && s){
                            let strP = s.split(/:(.+)/, 2);
                            strP[0] = strP[0].trim();
                            if(strP[0]){
                                let firstP = strP[0].split(/([,\{\[])/g);
                                firstP[firstP.length-1] = bulkRegex(firstP[firstP.length-1], false, p => p.replace(/[^A-Za-z0-9\-_]/, ''));
                                strP[0] = firstP.join('');
                            }
                            let part = strP[1].trim();
                            if((part.startsWith('"') && part.endsWith('"')) || (part.startsWith('\'') && part.endsWith('\'')) || (part.startsWith('`') && part.endsWith('`'))){
                                part = part.substr(1, part.length - 2);
                            }
                            part = bulkRegex(part, false, [
                                p => p.replace(/(["])/gm, '\\$1'),
                                p => p.replace(/\\'/gm, '\''),
                                p => p.replace(/\\`/gm, '`'),
                            ]);
                            strP[1] = ('"'+part+'"').trim();
                            s = strP.join(':');
                        }
                        return s;
                    });
                    return str.join('');
                },
                str => str.replace(/(['"])?([a-zA-Z0-9\-_]+)(['"])?:/g, '"$2":'),
                str => {
                    str = str.split(/(?=[,\}\]])/g);
                    str = str.map(s => {
                        if(s.includes(':') && s){
                            let strP = s.split(/:(.+)/, 2);
                            strP[0] = strP[0].trim();
                            if(strP[1].includes('"') && strP[1].includes(':')){
                                let part = strP[1].trim();
                                if(part.startsWith('"') && part.endsWith('"')){
                                    part = part.substr(1, part.length - 2);
                                    part = bulkRegex(part, false, p => p.replace(/(?<!\\)"/gm, ''));
                                }
                                strP[1] = ('"'+part+'"').trim();
                            }
                            s = strP.join(':');
                        }
                        return s;
                    });
                    return str.join('');
                },
            ]);
            try{
                json = JSON.parse(json);
            }catch(e){return false;}
        }
        return json;
    }
    return false;
}

Popularity 1/10 Helpfulness 1/10 Language javascript

Source: stackoverflow.com

Tags: javascript json

Link to this answer
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Contributed on Aug 07 2022

Restu Wahyu Saputra

0 Answers Avg Quality 2/10

how to fix bad json javascript

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