nvlson
v1.0.4
Published
nvlson ======================= - another json, its a simple version of nvison - full-support : true | false | js-number | js-string | bigint | regexp | date | array-buffer(treat--as-leaf) | array(container) | dict(container) - full-support : NaN
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nvlson
another json, its a simple version of nvison
full-support : true | false | js-number | js-string | bigint | regexp | date | array-buffer(treat--as-leaf) | array(container) | dict(container)
full-support : NaN | +Infinity | -Infinity
partly-support: symbol(USE Symbol.for to parse)
partly-support: undefined( in array whill be a empty-slot【which not work for forEach AND .map】, in dict will disappear)
not-support : circular-reference
not-support : multi-key
not-support : comments
not-support : user-defined-seperator/comma/colon
not-support : loose-scientific-number
its slow, coz it USE JSON.stringify/JSON.parse replacer directly, that is slow
its for test lson-data-structure in nvlang , normally useless
its about 8 times SLOW than JSON.stringify/JSON.parse
install
- npm install nvlson
usage
const { parse,stringify } = require("nvlson");example
var x = require("nvlson")
var y = Symbol.for("sym");
var ab = v8.serialize("\x00\x01abcdefg\xfe\xff").buffer;
/*
ArrayBuffer {
[Uint8Contents]: <ff 0d 22 0b 00 01 61 62 63 64 65 66 67 fe ff>,
byteLength: 15
}
*/
var j = [undefined,null,true,false,NaN,+Infinity,-Infinity,11.11,"string",y,new Date,/[a-z]+/i, 12345678901234567890n,ab];
var s = x.stringify(j,2);
/*
[
"u",
"n",
"t",
"f",
" ",
"+",
"-",
"N¸\u001e
ëQ8&@",
"Sstring",
"Ysym",
"D\u0000 O
qxB",
"R[\"[a-z]+\",\"i\"]",
"B12345678901234567890",
"Aÿ\r\"\u000b\u0000\u0001abcdefgþÿ"
]
*/
> x.parse(s)
/*
[
<1 empty item>,
null,
true,
false,
NaN,
Infinity,
-Infinity,
11.11,
'string',
Symbol(sym),
2023-03-25T11:02:23.584Z,
/[a-z]+/i,
12345678901234567890n,
ArrayBuffer {
[Uint8Contents]: <ff 0d 22 0b 00 01 61 62 63 64 65 66 67 fe ff>,
byteLength: 15
}
]
>
*/
var j = {
ary: [
undefined,
{
nu:null,
t:true,
f:false
},
NaN,
[
new Date,
"sssssssssssssssssssssssssssssssssssssssssssssss",
Symbol.for("sym-using-for"),
]
],
dict: {
un: undefined,
infi: [+Infinity,-Infinity],
numlike: {
f64: [11.11,0,22e8,-11.11],
bi: [-1n,0n,123456789123456789123456789n],
ab: v8.serialize("\x00\x01abcdefg\xfe\xff").buffer
}
}
}
var s = x.stringify(j,2)
/*
{
"ary": [
"u",
{
"nu": "n",
"t": "t",
"f": "f"
},
" ",
[
"D\u0000p¦pqxB",
"Ssssssssssssssssssssssssssssssssssssssssssssssss",
"Ysym-using-for"
]
],
"dict": {
"un": "u",
"infi": [
"+",
"-"
],
"numlike": {
"f64": [
"N¸\u001e
ëQ8&@",
"N\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000",
"N\u0000\u0000\u0000À*dàA",
"N¸\u001e
ëQ8&À"
],
"bi": [
"B-1",
"B0",
"B123456789123456789123456789"
],
"ab": "Aÿ\r\"\u000b\u0000\u0001abcdefgþÿ"
}
}
}
*/
x.parse(s)
/*
> x.parse(s)
{
ary: [
<1 empty item>, // undefined become empty slot
{ nu: null, t: true, f: false },
NaN,
[
2023-03-25T11:11:07.367Z,
'sssssssssssssssssssssssssssssssssssssssssssssss',
Symbol(sym-using-for)
]
],
dict: {
//undefined disappeared
infi: [ Infinity, -Infinity ],
numlike: { f64: [Array], bi: [Array], ab: [ArrayBuffer] }
}
}
>
*/
/*
> for(let e of a) {console.log(e)}
undefined //work
{ nu: null, t: true, f: false }
NaN
[
2023-03-25T11:11:07.367Z,
'sssssssssssssssssssssssssssssssssssssssssssssss',
Symbol(sym-using-for)
]
> a.forEach((r,i)=>console.log(r,i))
// empty-slot cant be forEach OR Map
{ nu: null, t: true, f: false } 1
NaN 2
[
2023-03-25T11:11:07.367Z,
'sssssssssssssssssssssssssssssssssssssssssssssss',
Symbol(sym-using-for)
] 3
*/speed test
var jlson = {
ary: [
undefined,
{
nu:null,
t:true,
f:false
},
NaN,
[
new Date,
"sssssssssssssssssssssssssssssssssssssssssssssss",
Symbol.for("sym-using-for"),
]
],
dict: {
un: undefined,
infi: [+Infinity,-Infinity],
numlike: {
f64: [11.11,0,22e8,-11.11],
bi: [-1n,0n,123456789123456789123456789n],
ab: v8.serialize("\x00\x01abcdefg\xfe\xff").buffer
}
}
}
var jjson = {
ary: [
undefined,
{
nu:null,
t:true,
f:false
},
-0,
[
new Date,
"sssssssssssssssssssssssssssssssssssssssssssssss",
"sym-using-for",
]
],
dict: {
un: undefined,
infi: [Number.MAX_VALUE,-Number.MAX_VALUE],
numlike: {
f64: [11.11,0,22e8,-11.11],
bi: [-1,0,1.2345678912345679e+26],
ab: v8.serialize("\x00\x01abcdefg\xfe\xff").toString("latin1")
}
}
}
> sync(100000,(j)=>JSON.stringify(j),jjson)
{
rounds: 100000,
f: [Function (anonymous)],
costed: 411.23624181747437
}
>
> sync(100000,(j)=>x.stringify(j),jlson) //7 times slow than JSON.stringify
{
rounds: 100000,
f: [Function (anonymous)],
costed: 2852.3511419296265
}
>
var sjson =JSON.stringify(jjson);
var slson = x.stringify(jlson);
>sync(100000,(s)=>JSON.parse(s),sjson);
{
rounds: 100000,
f: [Function (anonymous)],
costed: 265.8316650390625
}
>
> sync(100000,(s)=>x.parse(s),slson); // 8 times slow than JSON.parse
{
rounds: 100000,
f: [Function (anonymous)],
costed: 1864.9141840934753
}
>METHODS
APIS
{
T2NM: {
u: 'undefined',
n: 'null',
t: 'true',
f: 'false',
' ': 'NaN',
'+': '+Infinity',
'-': '-Infinity',
N: 'number',
S: 'string',
B: 'bigint',
Y: 'symbol',
R: 'RegExp',
D: 'Date',
A: 'ArrayBuffer'
},
encd_rgx: [Function: encd_rgx],
decd_rgx: [Function: decd_rgx],
encd_num: [Function: encd_num],
decd_num: [Function: decd_num],
encd_dt: [Function: encd_dt],
decd_dt: [Function: decd_dt],
can_be_stringify_to_lson
stringify: [Function: stringify],
parse: [Function: parse]
}LICENSE
- ISC