require

来源： https://stackoverflow.com/questions/28450263/define-is-not-defined-javascript-node

来源： https://stackoverflow.com/questions/10873031/how-can-i-prevent-to-include-same-file-twice-in-an-included-file

来源： https://stackoverflow.com/questions/10873031/how-can-i-prevent-to-include-same-file-twice-in-an-included-file

问题 I'm using Mapbox, and I'm trying to convert a Geojson to a zipped shapefile using shp-write. But when I follow the example given on the GitHub page, I'm getting a "ReferenceError: require is not defined" error on this line: var shpwrite = require('shp-write'); This is a jsfiddle in which you can test this. I'm relatively new to JavaScript, and haven't had to use the 'require()' function before. 回答1: The jsfiddle you provided includes several external resources, among which a shpwrite

问题 I am trying to play some audio in a react-native app created with the expo-cli. The code is written in typescript and the offending code looks like this, taken from the expo.io documentation: import * as React from 'react' import { WorkoutComponent } from "./WorkoutExecutor"; import { Audio } from 'expo'; export default class AudioPlayer { private async playAudio(fileName: string) { console.log("Playing Audio: " + fileName); const soundFile = './assets/sounds/' + fileName + '.mp3'; try {

问题 I'm using IMAPFilter, and I'd like to keep my global configuration in a public repository, while keeping the local (and secret) configuration in a separate file. So I'm running imapfilter from some directory, it includes ~/.imapfilter/config.lua, and that should include ./config_local.lua, where "." is the directory of config.lua , not the shell $PWD or the location of imapfilter . Here's what I've tried so far: require "config_local" require "./config_local" Edit: An absolute path works:

问题 I'm trying to require a file with a variable in the path. Something like const langCode = this.props.langCode; // en let languageFile = require('../common/languages/' + langCode); Where langCode can be fr, en, de, nl. Thus what I'm trying to get is for example require('../common/languages/en'); When I type it without variable at the end, thus require('../common/languages/en'); it works good. But when I try with require('../common/languages/' + langCode); it won't work, doesn't matter that the

问题 I'm trying to require a file with a variable in the path. Something like const langCode = this.props.langCode; // en let languageFile = require('../common/languages/' + langCode); Where langCode can be fr, en, de, nl. Thus what I'm trying to get is for example require('../common/languages/en'); When I type it without variable at the end, thus require('../common/languages/en'); it works good. But when I try with require('../common/languages/' + langCode); it won't work, doesn't matter that the

问题 Loading a module ( ABC ) with require works in one module of a distribution while it fails in another module of the distribution. What could be the reason that loading ABC with require fails in one place? require Name::ABC; my $new = Name::ABC.new(); # dies: You cannot create an instance of this type (ABC) perl6 -v This is Rakudo Star version 2019.03.1 built on MoarVM version 2019.03 implementing Perl 6.d. The the required module: App::DBBrowser::Subqueries App::DBBrowser::Union, line 80: OK

问题 Loading a module ( ABC ) with require works in one module of a distribution while it fails in another module of the distribution. What could be the reason that loading ABC with require fails in one place? require Name::ABC; my $new = Name::ABC.new(); # dies: You cannot create an instance of this type (ABC) perl6 -v This is Rakudo Star version 2019.03.1 built on MoarVM version 2019.03 implementing Perl 6.d. The the required module: App::DBBrowser::Subqueries App::DBBrowser::Union, line 80: OK