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NodeJS Standard Library for Nim

Code NodeJS using Nim, test frontend projects using NodeJS, use NodeJS libraries with Nim, etc.

Documentation

Mobile

Client Side

Install

  • nimble install nodejs OR nimble install https://github.com/juancarlospaco/nodejs.git

Design

  • It does not use anything from Nim standard library, very future-proof, just imports some types to be compatible with it, like RegExp, etc.
  • We do not deprecate stuff, even if NodeJS deprecate/remove it, it will keep working for Nim.
  • Stuff deprecated/demoved before year 2020 will not be supported.
  • Experimental or Unstable API on NodeJS are automatically implicitly considered Experimental here.
  • Package version == NodeJS version.

Efficiency

  • is it any good ?, improves something ?.
import jsconsole, nodejs
console.log base64encode("example")

This module generated JavaScript:

console.log(Buffer.from("example", "utf-8").toString("base64"));

Standard Library:

import jsconsole, base64  # Standard Library
console.log base64encode("example")
Standard Library Generated JavaScript 
function mnewString(len_33558512) {
    return new Array(len_33558512);
}
function makeNimstrLit(c_33558354) {
    var ln = c_33558354.length;
    var result = new Array(ln);
    for (var i = 0; i < ln; ++i) {
        result[i] = c_33558354.charCodeAt(i);
    }
    return result;
}
function toJSStr(s_33558362) {
    var Tmp5;
    var Tmp7;
    var result_33558363 = null;
    var res_33558422 = newSeq_33558393((s_33558362).length);
    var i_33558424 = 0;
    var j_33558426 = 0;
    L1: do {
        L2: while (true) {
            if (!(i_33558424 < (s_33558362).length)) break L2;
            var c_33558427 = s_33558362[i_33558424];
            if ((c_33558427 < 128)) {
                res_33558422[j_33558426] = String.fromCharCode(c_33558427);
                i_33558424 += 1;
            } else {
                var helper_33558450 = newSeq_33558393(0);
                L3: do {
                    L4: while (true) {
                        if (!true) break L4;
                        var code_33558451 = c_33558427.toString(16);
                        if (((code_33558451).length == 1)) {
                            helper_33558450.push("%0");;
                        } else {
                            helper_33558450.push("%");;
                        }
                        helper_33558450.push(code_33558451);;
                        i_33558424 += 1;
                        if (((s_33558362).length <= i_33558424)) Tmp5 = true;
                        else {
                            Tmp5 = (s_33558362[i_33558424] < 128);
                        }
                        if (Tmp5) {
                            break L3;
                        }
                        c_33558427 = s_33558362[i_33558424];
                    }
                } while (false);
                ++excHandler;
                Tmp7 = framePtr;
                try {
                    res_33558422[j_33558426] = decodeURIComponent(helper_33558450.join(""));
                    --excHandler;
                } catch (EXC) {
                    var prevJSError = lastJSError;
                    lastJSError = EXC;
                    --excHandler;
                    framePtr = Tmp7;
                    res_33558422[j_33558426] = helper_33558450.join("");
                    lastJSError = prevJSError;
                } finally {
                    framePtr = Tmp7;
                }
            }
            j_33558426 += 1;
        }
    } while (false);
    if (res_33558422.length < j_33558426) {
        for (var i = res_33558422.length; i < j_33558426; ++i) res_33558422.push(null);
    } else {
        res_33558422.length = j_33558426;
    };
    result_33558363 = res_33558422.join("");
    return result_33558363;
}
var globalRaiseHook_33557677 = [null];
if (globalThis.localRaiseHook_33557682 === undefined) {
    localRaiseHook_33557682 = [null];
}
var outOfMemHook_33557685 = [null];
var unhandledExceptionHook_33557690 = [null];
var cb64_469762056 = [65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 43, 47];
var cb64safe_469762059 = [65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 45, 95];
function encode_469762156(s_469762158, safe_469762159) {
    var Tmp2;
    var result_469762160 = [];
    L1: do {
        if (safe_469762159) {
            Tmp2 = cb64safe_469762059;
        } else {
            Tmp2 = cb64_469762056;
        }
        var lookupTable_469762502 = Tmp2;
        (result_469762160.length = (Math.trunc(((s_469762158).length * 4) / 3) + 6));
        var inputIndexHEX60gensym45_469762513 = 0;
        var outputIndexHEX60gensym45_469762515 = 0;
        var inputEndsHEX60gensym45_469762516 = ((s_469762158).length - Math.trunc((s_469762158).length % 3));
        var nHEX60gensym45_469762517 = 0;
        var bHEX60gensym45_469762518 = 0;
        L3: do {
            L4: while (true) {
                if (!!((inputIndexHEX60gensym45_469762513 == inputEndsHEX60gensym45_469762516))) break L4;
                bHEX60gensym45_469762518 = s_469762158[inputIndexHEX60gensym45_469762513];
                nHEX60gensym45_469762517 = (bHEX60gensym45_469762518 << 16);
                inputIndexHEX60gensym45_469762513 += 1;
                bHEX60gensym45_469762518 = s_469762158[inputIndexHEX60gensym45_469762513];
                nHEX60gensym45_469762517 = (nHEX60gensym45_469762517 | (bHEX60gensym45_469762518 << 8));
                inputIndexHEX60gensym45_469762513 += 1;
                bHEX60gensym45_469762518 = s_469762158[inputIndexHEX60gensym45_469762513];
                nHEX60gensym45_469762517 = (nHEX60gensym45_469762517 | (bHEX60gensym45_469762518 << 0));
                inputIndexHEX60gensym45_469762513 += 1;
                result_469762160[outputIndexHEX60gensym45_469762515] = lookupTable_469762502[(((nHEX60gensym45_469762517 >>> 0) >>> 18) & 63)];
                outputIndexHEX60gensym45_469762515 += 1;
                result_469762160[outputIndexHEX60gensym45_469762515] = lookupTable_469762502[(((nHEX60gensym45_469762517 >>> 0) >>> 12) & 63)];
                outputIndexHEX60gensym45_469762515 += 1;
                result_469762160[outputIndexHEX60gensym45_469762515] = lookupTable_469762502[(((nHEX60gensym45_469762517 >>> 0) >>> 6) & 63)];
                outputIndexHEX60gensym45_469762515 += 1;
                result_469762160[outputIndexHEX60gensym45_469762515] = lookupTable_469762502[(((nHEX60gensym45_469762517 >>> 0) >>> 0) & 63)];
                outputIndexHEX60gensym45_469762515 += 1;
            }
        } while (false);
        var paddingHEX60gensym45_469762646 = Math.trunc((s_469762158).length % 3);
        if ((paddingHEX60gensym45_469762646 == 1)) {
            bHEX60gensym45_469762518 = s_469762158[inputIndexHEX60gensym45_469762513];
            nHEX60gensym45_469762517 = (bHEX60gensym45_469762518 << 16);
            inputIndexHEX60gensym45_469762513 += 1;
            result_469762160[outputIndexHEX60gensym45_469762515] = lookupTable_469762502[(((nHEX60gensym45_469762517 >>> 0) >>> 18) & 63)];
            outputIndexHEX60gensym45_469762515 += 1;
            result_469762160[outputIndexHEX60gensym45_469762515] = lookupTable_469762502[(((nHEX60gensym45_469762517 >>> 0) >>> 12) & 63)];
            outputIndexHEX60gensym45_469762515 += 1;
            result_469762160[outputIndexHEX60gensym45_469762515] = 61;
            outputIndexHEX60gensym45_469762515 += 1;
            result_469762160[outputIndexHEX60gensym45_469762515] = 61;
            outputIndexHEX60gensym45_469762515 += 1;
        } else {
            if ((paddingHEX60gensym45_469762646 == 2)) {
                bHEX60gensym45_469762518 = s_469762158[inputIndexHEX60gensym45_469762513];
                nHEX60gensym45_469762517 = (bHEX60gensym45_469762518 << 16);
                inputIndexHEX60gensym45_469762513 += 1;
                bHEX60gensym45_469762518 = s_469762158[inputIndexHEX60gensym45_469762513];
                nHEX60gensym45_469762517 = (nHEX60gensym45_469762517 | (bHEX60gensym45_469762518 << 8));
                inputIndexHEX60gensym45_469762513 += 1;
                result_469762160[outputIndexHEX60gensym45_469762515] = lookupTable_469762502[(((nHEX60gensym45_469762517 >>> 0) >>> 18) & 63)];
                outputIndexHEX60gensym45_469762515 += 1;
                result_469762160[outputIndexHEX60gensym45_469762515] = lookupTable_469762502[(((nHEX60gensym45_469762517 >>> 0) >>> 12) & 63)];
                outputIndexHEX60gensym45_469762515 += 1;
                result_469762160[outputIndexHEX60gensym45_469762515] = lookupTable_469762502[(((nHEX60gensym45_469762517 >>> 0) >>> 6) & 63)];
                outputIndexHEX60gensym45_469762515 += 1;
                result_469762160[outputIndexHEX60gensym45_469762515] = 61;
                outputIndexHEX60gensym45_469762515 += 1;
            }
        }
        (result_469762160.length = outputIndexHEX60gensym45_469762515);
    } while (false);
    return result_469762160;
}
function newSeq_33558393(len_33558396) {
    var result_33558398 = [];
    result_33558398 = new Array(len_33558396);
    for (var i = 0; i < len_33558396; ++i) {
        result_33558398[i] = null;
    }
    return result_33558398;
}

console.log(toJSStr(encode_469762156(makeNimstrLit("example"), false)));
import jsconsole, nodejs
console.log deduplicate([9, 2, 3, 9, 4, 5, 6, 9])

This module generated JavaScript:

console.log([...new Set([9, 2, 3, 9, 4, 5, 6, 9])]);

Standard Library:

import jsconsole, sequtils # Standard Library
console.log deduplicate([9, 2, 3, 9, 4, 5, 6, 9])
Standard Library Generated JavaScript 
var NTI369098754 = {
    size: 0,
    kind: 31,
    base: null,
    node: null,
    finalizer: null
};
var NTI369098779 = {
    size: 0,
    kind: 24,
    base: null,
    node: null,
    finalizer: null
};
NTI369098779.base = NTI369098754;

function setConstr() {
    var result = {};
    for (var i = 0; i < arguments.length; ++i) {
        var x = arguments[i];
        if (typeof(x) == "object") {
            for (var j = x[0]; j <= x[1]; ++j) {
                result[j] = true;
            }
        } else {
            result[x] = true;
        }
    }
    return result;
}
var ConstSet1 = setConstr(17, 16, 4, 18, 27, 19, 23, 22, 21);
function nimCopy(dest_33558821, src_33558822, ti_33558823) {
    var result_33558835 = null;
    switch (ti_33558823.kind) {
        case 21:
        case 22:
        case 23:
        case 5:
            if (!(isFatPointer_33558808(ti_33558823))) {
                result_33558835 = src_33558822;
            } else {
                result_33558835 = [src_33558822[0], src_33558822[1]];
            }
            break;
        case 19:
            if (dest_33558821 === null || dest_33558821 === undefined) {
                dest_33558821 = {};
            } else {
                for (var key in dest_33558821) {
                    delete dest_33558821[key];
                }
            }
            for (var key in src_33558822) {
                dest_33558821[key] = src_33558822[key];
            }
            result_33558835 = dest_33558821;
            break;
        case 18:
        case 17:
            if (!((ti_33558823.base == null))) {
                result_33558835 = nimCopy(dest_33558821, src_33558822, ti_33558823.base);
            } else {
                if ((ti_33558823.kind == 17)) {
                    result_33558835 = (dest_33558821 === null || dest_33558821 === undefined) ? {
                        m_type: ti_33558823
                    } : dest_33558821;
                } else {
                    result_33558835 = (dest_33558821 === null || dest_33558821 === undefined) ? {} : dest_33558821;
                }
            }
            nimCopyAux(result_33558835, src_33558822, ti_33558823.node);
            break;
        case 24:
        case 4:
        case 27:
        case 16:
            if (src_33558822 === null) {
                result_33558835 = null;
            } else {
                if (dest_33558821 === null || dest_33558821 === undefined) {
                    dest_33558821 = new Array(src_33558822.length);
                } else {
                    dest_33558821.length = src_33558822.length;
                }
                result_33558835 = dest_33558821;
                for (var i = 0; i < src_33558822.length; ++i) {
                    result_33558835[i] = nimCopy(result_33558835[i], src_33558822[i], ti_33558823.base);
                }
            }
            break;
        case 28:
            if (src_33558822 !== null) {
                result_33558835 = src_33558822.slice(0);
            }
            break;
        default:
            result_33558835 = src_33558822;
            break;
    }
    return result_33558835;
}
var globalRaiseHook_33557677 = [null];
if (globalThis.localRaiseHook_33557682 === undefined) {
    localRaiseHook_33557682 = [null];
}
var outOfMemHook_33557685 = [null];
var unhandledExceptionHook_33557690 = [null];
function isFatPointer_33558808(ti_33558810) {
    var result_33558811 = false;
    BeforeRet: do {
        result_33558811 = !((ConstSet1[ti_33558810.base.kind] != undefined));
        break BeforeRet;
    } while (false);
    return result_33558811;

}
function nimCopyAux(dest_33558826, src_33558827, n_33558829) {
    switch (n_33558829.kind) {
        case 0:
            break;
        case 1:
            dest_33558826[n_33558829.offset] = nimCopy(dest_33558826[n_33558829.offset], src_33558827[n_33558829.offset], n_33558829.typ);

            break;
        case 2:
            for (var i = 0; i < n_33558829.sons.length; i++) {
                nimCopyAux(dest_33558826, src_33558827, n_33558829.sons[i]);
            }

            break;
        case 3:
            dest_33558826[n_33558829.offset] = nimCopy(dest_33558826[n_33558829.offset], src_33558827[n_33558829.offset], n_33558829.typ);
            for (var i = 0; i < n_33558829.sons.length; ++i) {
                nimCopyAux(dest_33558826, src_33558827, n_33558829.sons[i][1]);
            }
            break;
    }
}
function find_369098843(a_369098847, item_369098848) {
    var result_369098849 = 0;
    BeforeRet: do {
        result_369098849 = 0;
        L1: do {
            var i_369098856 = null;
            var i_369098856_Idx = 0;
            var i_369098947 = 0;
            L2: do {
                L3: while (true) {
                    if (!(i_369098947 < (a_369098847).length)) break L3;
                    i_369098856 = a_369098847;
                    i_369098856_Idx = i_369098947;
                    if ((i_369098856[i_369098856_Idx] == item_369098848)) {
                        break BeforeRet;
                    }
                    result_369098849 += 1;
                    i_369098947 += 1;
                }
            } while (false);
        } while (false);
        result_369098849 = -1;
    } while (false);
    return result_369098849;
}
function contains_369098836(a_369098840, item_369098841) {
    var result_369098842 = false;
    BeforeRet: do {
        result_369098842 = (0 <= find_369098843(a_369098840, item_369098841));
        break BeforeRet;
    } while (false);
    return result_369098842;
}
function deduplicate_369098757(s_369098761, isSorted_369098762) {
    var result_369098764 = [];
    result_369098764 = nimCopy(null, [], NTI369098779);
    if ((0 < (s_369098761).length)) {
        if (isSorted_369098762) {
            var prev_369098784 = s_369098761[0];
            result_369098764.push(prev_369098784);;
            L1: do {
                var i_369098806 = 0;
                var colontmp__369098932 = 0;
                colontmp__369098932 = ((s_369098761).length - 1);
                var res_369098937 = 1;
                L2: do {
                    L3: while (true) {
                        if (!(res_369098937 <= colontmp__369098932)) break L3;
                        i_369098806 = res_369098937;
                        if (!((s_369098761[i_369098806] == prev_369098784))) {
                            prev_369098784 = s_369098761[i_369098806];
                            result_369098764.push(prev_369098784);;
                        }
                        res_369098937 += 1;
                    }
                } while (false);
            } while (false);
        } else {
            L4: do {
                var itm_369098834 = null;
                var itm_369098834_Idx = 0;
                var i_369098944 = 0;
                L5: do {
                    L6: while (true) {
                        if (!(i_369098944 < (s_369098761).length)) break L6;
                        itm_369098834 = s_369098761;
                        itm_369098834_Idx = i_369098944;
                        if (!(contains_369098836(result_369098764, itm_369098834[itm_369098834_Idx]))) {
                            result_369098764.push(itm_369098834[itm_369098834_Idx]);;
                        }
                        i_369098944 += 1;
                    }
                } while (false);
            } while (false);
        }
    }
    return result_369098764;
}

console.log(deduplicate_369098757([9, 2, 3, 9, 4, 5, 6, 9], false));

See also:

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Nim running in NodeJS

juancarlospaco.github.io/nodejs

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