Wrong result while quering by $lt/lte/gte with a large numeric string property

[qiangbro]

my code:

    let t;

    let alarms = [];
    for (let i = 0; i < 80000; i++) {
        let id = "74590869096" + (907836 + i);
        alarms.push({id, name: 'hello' + i});
    }

    var db = new loki('exampleDB');
    var alarmCollection = db.addCollection('myAlarms', {unique: ['id']});

    t = Date.now();
    alarms.forEach(obj => alarmCollection.insert(obj));
    console.log(`完成插入 耗时${(Date.now() - t) / 1000}s alarmCollection.count=${alarmCollection.count()}`);


    let example = alarmCollection.chain().compoundsort(['id']).offset(50000).limit(1).data()[0];
    let exampleId = example.id;

    console.log('exampleId', exampleId)

    t = Date.now();
    console.log('count jlt exampleId by lokijs',  alarmCollection.count({id: {$jlt: exampleId}}), `, 耗时${(Date.now() - t) / 1000}s`);
    t = Date.now();
    console.log('count jlte exampleId by lokijs', alarmCollection.count({id: {$jlte: exampleId}}), `, 耗时${(Date.now() - t) / 1000}s`);
    t = Date.now();
    console.log('count jgt exampleId by lokijs',  alarmCollection.count({id: {$jgt: exampleId}}), `, 耗时${(Date.now() - t) / 1000}s`);

    t = Date.now();
    console.log('count lt exampleId by js',    alarms.filter(a => (a.id < exampleId)).length, `, 耗时${(Date.now() - t) / 1000}s`);
    t = Date.now();
    console.log('count lte exampleId by js',    alarms.filter(a => (a.id <= exampleId)).length, `, 耗时${(Date.now() - t) / 1000}s`);
    t = Date.now();
    console.log('count gt exampleId by js',    alarms.filter(a => (a.id > exampleId)).length, `, 耗时${(Date.now() - t) / 1000}s`);

    t = Date.now();
    console.log('count lt exampleId by lokijs',  alarmCollection.count({id: {$lt: exampleId}}), `, 耗时${(Date.now() - t) / 1000}s`);
    t = Date.now();
    console.log('count lte exampleId by lokijs', alarmCollection.count({id: {$lte: exampleId}}), `, 耗时${(Date.now() - t) / 1000}s`);
    t = Date.now();
    console.log('count gt exampleId by lokijs',  alarmCollection.count({id: {$gt: exampleId}}), `, 耗时${(Date.now() - t) / 1000}s`);

result:

完成插入 耗时0.101s alarmCollection.count=80000
exampleId 74590869096957836
count jlt exampleId by lokijs 50000 , 耗时0.005s
count jlte exampleId by lokijs 50001 , 耗时0.005s
count jgt exampleId by lokijs 29999 , 耗时0.004s
count lt exampleId by js 50000 , 耗时0.002s
count lte exampleId by js 50001 , 耗时0.002s
count gt exampleId by js 29999 , 耗时0.002s
count lt exampleId by lokijs 49997 , 耗时0.018s
count lte exampleId by lokijs 50012 , 耗时0.015s
count gt exampleId by lokijs 29988 , 耗时0.016s

as we can see, count lte exampleId shoud be 50001, es6 and $jlte return correct result, but lokijs's $lte returns 50012.

[stale]

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