我已经尝试将Web3安装到我的Ionicv4项目中有一段时间了。当我为项目提供服务时,它总是抛出错误。
这是我目前所拥有的。我使用
npm install --save web3
这就是使用它的服务的样子,非常简单,仅用于测试。
import { Injectable } from '@angular/core';
import Web3 from 'web3';
@Injectable({
providedIn: 'root'
})
export class Web3Service {
constructor() { }
web3 = new Web3(new Web3.providers.HttpProvider('https://ropsten.infura.io/v3/INFURA_API_KEY_HERE')); // removed api key for obvious reasons
logThings() {
console.log(this.web3);
}
}
下面是我的package.json的外观:
{
"name": "webb3",
"version": "0.0.1",
"author": "Ionic Framework",
"homepage": "https://ionicframework.com/",
"scripts": {
"ng": "ng",
"start": "ng serve",
"build": "ng build",
"test": "ng test",
"lint": "ng lint",
"e2e": "ng e2e"
},
"private": true,
"dependencies": {
"@angular/common": "^7.2.2",
"@angular/core": "^7.2.2",
"@angular/forms": "^7.2.2",
"@angular/http": "^7.2.2",
"@angular/platform-browser": "^7.2.2",
"@angular/platform-browser-dynamic": "^7.2.2",
"@angular/router": "^7.2.2",
"@ionic-native/core": "^5.0.0",
"@ionic-native/splash-screen": "^5.0.0",
"@ionic-native/status-bar": "^5.0.0",
"@ionic/angular": "^4.0.0",
"@ionic/pro": "2.0.4",
"core-js": "^2.5.4",
"rxjs": "~6.3.3",
"web3": "^1.0.0-beta.39",
"zone.js": "~0.8.29"
},
"devDependencies": {
"@angular-devkit/architect": "~0.12.3",
"@angular-devkit/build-angular": "~0.12.3",
"@angular-devkit/core": "~7.2.3",
"@angular-devkit/schematics": "~7.2.3",
"@angular/cli": "~7.2.3",
"@angular/compiler": "~7.2.2",
"@angular/compiler-cli": "~7.2.2",
"@angular/language-service": "~7.2.2",
"@ionic/angular-toolkit": "~1.2.0",
"@types/jasmine": "~2.8.8",
"@types/jasminewd2": "~2.0.3",
"@types/node": "^10.12.18",
"codelyzer": "~4.5.0",
"jasmine-core": "~2.99.1",
"jasmine-spec-reporter": "~4.2.1",
"karma": "~3.1.4",
"karma-chrome-launcher": "~2.2.0",
"karma-coverage-istanbul-reporter": "~2.0.1",
"karma-jasmine": "~1.1.2",
"karma-jasmine-html-reporter": "^0.2.2",
"protractor": "~5.4.0",
"ts-node": "~8.0.0",
"tslint": "~5.12.0",
"typescript": "~3.1.6"
},
"description": "An Ionic project"
}
以下是我得到的错误:
[ng] ERROR in node_modules/web3-bzz/types/index.d.ts(28,27): error TS2580: Cannot find name 'Buffer'. Do you need to install type definitions for node? Try `npm i @types/node`.
[ng] node_modules/web3-bzz/types/index.d.ts(30,60): error TS2580: Cannot find name 'Buffer'. Do you need to install type definitions for node? Try `npm i @types/node`.
[ng] node_modules/web3-core/types/index.d.ts(20,22): error TS2307: Cannot find module 'net'.
[ng] node_modules/web3-providers/types/index.d.ts(23,22): error TS2307: Cannot find module 'net'.
[ng] node_modules/web3-utils/types/index.d.ts(71,54): error TS2580: Cannot find name 'Buffer'. Do you need to install type definitions for node? Try `npm i @types/node`.
[ng] node_modules/web3-utils/types/index.d.ts(72,48): error TS2580: Cannot find name 'Buffer'. Do you need to install type definitions for node? Try `npm i @types/node`.
[ng] node_modules/web3/types/index.d.ts(22,22): error TS2307: Cannot find module 'net'.
[ng]
[ng] i 「wdm」: Failed to compile.
我不太确定我做错了什么所以任何帮助都是非常感谢的,谢谢.
1条答案
按热度按时间093gszye1#
查看GitHub评论获取临时修复:
这是一个与angular-cli-files默认browser.js设置不匹配的问题,您必须修复这个问题,才能使web 3在angular应用程序上工作。
如果您在angular应用的根目录下创建了一个名为patch.js的文件,然后在package.json中的scripts下添加
"postinstall": "node patch.js"
。再次运行npm install
,然后ng build
将正常工作,您应该不会再遇到任何问题。这是因为我们必须将
/angular-cli-files/models/webpack-configs/browser.js
中的node:false
替换为'node: {crypto: true, stream: true}'
,以允许web 3使用Angular (因为他们强制node: false
)。在web3.js的下一个版本中将部署对此的永久性修复;PR为:
https://github.com/ethereum/web3.js/pull/2262