Hi,

It's would be much easier to use standalone neb.js (nebulas.js) in browser with public CDN url, like:
https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js

I think cdnjs and jsDelivr are good sites for hosting:

jsDelivr: https://www.jsdelivr.com/

CDNJS: https://cdnjs.com/

For the new library request issue, please make sure it's not a personal project, we have a basic requirement for the popularity, like 200 stars on GitHub or 800 downloads/month on npm registry.

Using the current package.json dependency setting "gulp": ">=3.9.0",version 4.0.0 of gulp-cli is automatically installed.
Setting should be set such that only the version 3 of gulp-cli is installed instead.

Error obtained with gulp v4:

yarn build v0.24.6
$ gulp
assert.js:42
  throw new errors.AssertionError({
  ^

AssertionError [ERR_ASSERTION]: Task function must be specified
    at Gulp.set [as _setTask] (/Users/ericluwj/Projects/neb.js/node_modules/undertaker/lib/set-task.js:10:3)
    at Gulp.task (/Users/ericluwj/Projects/neb.js/node_modules/undertaker/lib/task.js:13:8)
    at Object.<anonymous> (/Users/ericluwj/Projects/neb.js/gulpfile.js:71:6)
    at Module._compile (module.js:652:30)
    at Object.Module._extensions..js (module.js:663:10)
    at Module.load (module.js:565:32)
    at tryModuleLoad (module.js:505:12)
    at Function.Module._load (module.js:497:3)
    at Module.require (module.js:596:17)
    at require (internal/module.js:11:18)
    at execute (/Users/ericluwj/Projects/neb.js/node_modules/gulp-cli/lib/versioned/^4.0.0/index.js:36:18)
    at Liftoff.handleArguments (/Users/ericluwj/Projects/neb.js/node_modules/gulp-cli/index.js:175:63)
    at Liftoff.execute (/Users/ericluwj/Projects/neb.js/node_modules/liftoff/index.js:203:12)
    at module.exports (/Users/ericluwj/Projects/neb.js/node_modules/flagged-respawn/index.js:51:3)
    at Liftoff.<anonymous> (/Users/ericluwj/Projects/neb.js/node_modules/liftoff/index.js:195:5)
    at /Users/ericluwj/Projects/neb.js/node_modules/liftoff/index.js:165:9
error Command failed with exit code 1.

rpc请求没有超时控制，如果请求出去之后一直没有响应的话会一直等待， httprequest包里有this.timeout选项， 好像没有用用上

Environment:
neb.js git:(master) ✗ node -v v10.0.0

gulp run abort:
gulp gulp[84896]: ../src/node_contextify.cc:631:static void node::contextify::ContextifyScript::New(const FunctionCallbackInfo<v8::Value> &): Assertionargs[1]->IsString()' failed.
1: node::Abort() [/usr/local/bin/node]
2: node::Assert(char const* const () [4]) [/usr/local/bin/node]
3: node::contextify::ContextifyScript::New(v8::FunctionCallbackInfov8::Value const&) [/usr/local/bin/node]
4: v8::internal::FunctionCallbackArguments::Call(v8::internal::CallHandlerInfo) [/usr/local/bin/node]
5: v8::internal::MaybeHandlev8::internal::Object v8::internal::(anonymous namespace)::HandleApiCallHelper(v8::internal::Isolate*, v8::internal::Handlev8::internal::HeapObject, v8::internal::Handlev8::internal::HeapObject, v8::internal::Handlev8::internal::FunctionTemplateInfo, v8::internal::Handlev8::internal::Object, v8::internal::BuiltinArguments) [/usr/local/bin/node]
6: v8::internal::Builtin_Impl_HandleApiCall(v8::internal::BuiltinArguments, v8::internal::Isolate*) [/usr/local/bin/node]
7: 0x18b90a18427d
8: 0x18b90a18f755
9: 0x18b90a20bc20
10: 0x18b90a1944f7
11: 0x18b90a1944f7
12: 0x18b90a1944f7
[1] 84896 abort gulp
`

Maybe official release final dist js for us ,so we don't need to build it ourself.

Hi guys,
Finished 'npm install' then execute 'gulp', some exceptions throw as below
[20:59:53] Using gulpfile ~/Workspace/blockchain_area/neb.js/gulpfile.js
[20:59:53] Starting 'documentation'...
[20:59:53] FATAL: Unable to load template: Cannot find module 'moment'

[20:59:53] JSDoc returned with error code: 1
[20:59:53] 'documentation' errored after 715 ms

[21:02:41] FATAL: Unable to load template: Cannot find module 'sanitize-html'

[21:02:41] JSDoc returned with error code: 1
[21:02:41] 'documentation' errored after 1.09 s

After running 'npm install moment sanitize-html --save-dev' it works, I think you should append these two dependencies to the package.json

升级到 0.5.1 后，默认导出了 NVM。index.js 第 8 行

var NVM = require('./lib/nvm/nvm');

但是 NVM 里面默认引入了 native.js 。nvm.js 第 4 行

var native = require("./native");

native.js 会导致在浏览器环境下标准 Date 和 Math 对象被替换

而且会报 'Blockchain.block' is not defined.(因为Date对象依赖 Blockchain.block，而浏览器环境没有这个)

建议默认不要导出 NVM

Or how to make client-side geo-location trustable?

一直没找到一个开发者群，建了一个，欢迎大家加入讨论NAS星云链DAPP开发相关，互相赞应用，讨论创意

nebulas.js is 1.2Mb filesize, this is too big.
please provide a minify version.

Would you guys be interested in adding a utils function that converts currency units?

Something like toWei from web3.

现在有个需求是想【满足某个条件的时候触发一方法执行，且该方法只允许执行一次】

目前实现思路是在中心化 server 判断当区块高度变化时轮询合约runGame方法，runGame方法中通过修改gameStatus的值

case 2:
if ( nowBlockH > openPrizeH) {
      this.gameStatus = 3;
}
break;
case 3:
if( !hasEnterOpenPriceMethod(period)) {    //hasEnterOpenPriceMethod方法中修改了一个存储区的变量用来标记当期游戏已进入过开奖方法
      openPrizeH();
}
break;

问题 this.gameStatus = 3; 这个操作的生效是需要整个 tx success 之后呢 还是说方法体中执行过这个语句之后立即生效呢？
这个赋值操作是原子操作吗？（会立即反应到存储区吗？）

感谢！~

code like:
var tx = new nebulas.Transaction(1, sAccount, toAddress, "9999999999999999999999", nonce, 1000000, 2000000); tx.signTransaction(); neb.api.sendRawTransaction({data:tx.toProtoString()})
value 这里数值溢出,交易发送成功, 在 explorer 中可以看到一直处于 pending 状态, 一段时间后才展示 fail

This library does not load correctly when used in chrome for users with third-party cookies disabled.

When users have this setting enabled, localStorage is blocked.
https://www.chromium.org/for-testers/bug-reporting-guidelines/uncaught-securityerror-failed-to-read-the-localstorage-property-from-window-access-is-denied-for-this-document

The error in dev tools is "Failed to read the 'localStorage' property from 'Window': Access is denied for this document."

This affects code in native.js which has calls to localStorage.

This might be fixed by wrapping the localStorage aspects in a try/catch. Or there may be some other clever way.

Related to iancoleman/bip39#395

Write Smart Constract like this Event.trigger(...)，but how to listen the event?
does there have method like solididy "event.watch()"?

自己项目，引入 neb.js 后：

异常：

Unexpected token '...'. Expected a parameter pattern or a ')' in parameter list.

然后尝试看看官方的demo，发现也出现该异常。

nebulas.js本身要1M多，为什么编译时不提供生成一个nebulas.min.js压缩文件呢?

https://github.com/nebulasio/neb.js/blob/master/example/example.html
Seems like a mix up of nodejs code with html, please fix.

gulp
[02:58:45] Using gulpfile F:\Workspace\Single\dapps\web-views\neb.js\gulpfile.js
[02:58:45] Starting 'version'...
[02:58:45] Finished 'version' after 7.96 ms
[02:58:45] Starting 'lint'...
[02:58:45] Starting 'documentation'...
lib\account.js: line 278, col 21, This function's cyclomatic complexity is too high. (17)
lib\account.js: line 351, col 23, This function's cyclomatic complexity is too high. (10)

2 errors
[02:58:45] Finished 'lint' after 269 ms
[02:58:45] Starting 'clean'...
[02:58:45] Finished 'clean' after 3.89 ms
[02:58:45] Starting 'light'...
[02:58:45] Starting 'neb'...
[02:58:45] Starting 'request'...
[02:58:45] Starting 'account'...
[02:58:45] Starting 'transaction'...
[02:58:45] Starting 'nebulas'...
[02:58:47] Finished 'light' after 1.51 s
[02:58:47] Documented 12 files!
[02:58:47] Finished 'documentation' after 1.81 s
[02:58:49] Finished 'neb' after 3.03 s
[02:58:50] Finished 'request' after 4.79 s
[02:58:52] Finished 'account' after 6.16 s
[02:58:52] Finished 'nebulas' after 6.15 s
[02:58:52] Finished 'transaction' after 6.16 s
[02:58:52] Starting 'default'...
[02:58:52] Finished 'default' after 51 μs

node -v
v8.9.3

2018-August-20

1. Expect

claim Testnet token successfully when click "claim token"

Note: I did some change to source code, so in above screenshot, part of text is in Chinese. the original example.html is all English

2. What actually happen

I get 404 error

Please fix it

Hello, does anyone know that how to generate a new account from a give private key?

should be
tx = new Transaction(testnetchainID, account, account, Unit.nasToBasic(1), parseInt(state.nonce) + 1);

This is a general question, not about neb.js alone. I just want post it here :)

Question: How to build Nebulas SDK for different language?

Base on my understanding:

1. Implement RPC

• GetNebState
• GetAccountState
• LatestIrreversibleBlock
• Call
• SendRawTransaction
• GetBlockByHash
• GetBlockByHeight
• GetTransactionReceipt
• GetTransactionByContract
• GetGasPrice
• EstimateGas
• GetEventsByHash
• Subscribe
• GetDynasty

2. Implement RPC-admin

• NodeInfo
• Accounts
• NewAccount
• UnLockAccount
• LockAccount
• SignTransactionWithPassphrase
• SendTransactionWithPassphrase
• SendTransaction
• SignHash
• StartPprof
• GetConfig

Essentially what SDK does is

Send HTTP request to certain address with correct format

Question: Are my assumption correct?

These 2 step are all it take to build a Nebulas SDK? just implement rpc and rpc-admin base on document link above, is there anything else?

I am not trying to build a Nebulas SDK right now, I am just curious How to build one

Thanks

比如说一个NRC20的 transfer事件， 当一个账户调用了transfer方法后，虽然有调用transferEvent， 但是没有文档写明如何才能订阅到这个事件。

以太坊的是可以监听到这样的事件的。星云文档里面好像没有说明。

用处之一，比如说有其他人给我的地址transfer了token，我需要可以被通知到这个事件进行处理， 不知道星云对这种需求时如何处理的。 在网上未找到相应的文档。 只看到了getEventsByHash这个相关的方法，但是这个需要有hash才行，问题是别人给我transfer了token，我肯定是不知道他的交易hash的，所以这个方法也是没有用。

还请帮忙解答下。

使用了subscribe 方法，但是按照文档中代码来使用的时候报错。
代码如下：

var Nebulas = require('./index')

var Neb = Nebulas.Neb;
var neb = new Neb();
neb.api.subscribe({"topics": ["chain.contract.TestContract"]}).then(function(eventData) {
    console.log(JSON.stringify(eventData));
}).catch(function (e) { console.log("error:" + e) });

但是过一段时间会报下面的错误：

Unexpected token < in JSON at position 0

If supported

m / purpose' / coin_type' / account' / change / address_index

what's the cointype define？

Something like convertMnemonice(mnemonicPhrase, addressIndex), which takes bip39 mnemonic, converts it to proper private key, according to index, and returns both private key and NAS wallet.

addressIndex is used in BIP32 path, used for generating private key from mnemonic entropy.

This standarts are widely used in all hardware wallets, so it will come handy, adding support for them, and building interfaces to manage private keys for users.

More information:
https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki
https://github.com/bitcoin/bips/blob/master/bip-0044.mediawiki

Nebulas currently have a usable js version to create the wallet address and send the transaction. Neb. js implements all the RPC interfaces of the Nebulas, but none of these interfaces currently add parameter validation.

We should add parameter validation to these interfaces and functions.

RPC interfaces:

• api:wiki
• admin:wiki

Functions

• Transaction: The parameters of the constructor need to be checked.
  • chainID should be valid(1 Mainnet, 100[1/2/...] Testnet)
  • from must be a valid address with a private key
  • nonce must be a number

README say:

I still don't know when to use which.

File size have huge difference

Question

What the difference between these 2 file neb.js and nebulas.js?
What can I do with these 2?

哪来现在WEB钱包？

We realized this library was not compatible with React Native, so we modified this library to create an example that works on React Native:
https://github.com/weoneco/react-native-nebjs-example

Now, exceptions thrown from neb.js are all common Error Type, I think we need Accurate ErrorType or different error code to indicate the really exception it is.

I know we can retrieve transactions data from block height or number , but if a transaction hash supplied, how can I get the related block info?

https://nebulasio.github.io/neb.js/index.html

Link 'Public API documentation link' leads to the same page.

Node 8 可以

Node 10 和 11 不行

建议文档里至少提一句，应该用 Node.js 版本 8

会提供ruby的sdk么？

如题，希望支持npm引用

Hey
when i try to send transaction by api 'sendRawTransaction' on nodejs side, it always result in error like below:

Error: invalid argument(s)
    at /Users/jazz/Desktop/个人/NAS钱包/proj/nodeserver/node_modules/nebulas/lib/httprequest.js:48:19
    at <anonymous>
    at process._tickCallback `(internal/process/next_tick.js:188:7)

may anyone has ideals, i test it on testnet: https://testnet.nebulas.io/ and my code is:

var callContract = function(params) {
    neb.api.getAccountState(params.from).then(function (resp) {
        params.nonce = parseInt(resp.nonce) + 1;
        var gTx = new nebulas.Transaction(globalParams.chainId,
        globalParams.account,params.to, params.value, params.nonce, params.gasPrice, params.gasLimit, params.contract);

        console.log(gTx);

        gTx.signTransaction();

        console.log(gTx);

        neb.api.sendRawTransaction(gTx.toProtoString()).then(function (resp) {
            console.log(JSON.stringify(resp));
        })
        .catch(function (err) {
            console.log(err);
        });
    });
};

使用合约模拟功能,调用合约函数,不能显示函数返回值
显示 undefined

看了一下好像是nvm没有返回函数的返回值?

receiptTransaction函数内promise返回处理函数有问题，应该是写在then后面。