React-Native Bundle Error error SHA-1 for file is not computed

问题

I am facing this error while creating bundle of react-native app.

I am executing command react-native bundle --dev false --entry-file index.js --bundle-output ios/main.jsbundle --platform ios

error SHA-1 for file /usr/local/lib/node_modules/react-native/node_modules/metro/src/lib/polyfills/require.js (/usr/local/lib/node_modules/react-native/node_modules/metro/src/lib/polyfills/require.js) is not computed. Run CLI with --verbose flag for more details.
ReferenceError: SHA-1 for file /usr/local/lib/node_modules/react-native/node_modules/metro/src/lib/polyfills/require.js (/usr/local/lib/node_modules/react-native/node_modules/metro/src/lib/polyfills/require.js) is not computed
    at DependencyGraph.getSha1 (/usr/local/lib/node_modules/react-native/node_modules/metro/src/node-haste/DependencyGraph.js:258:13)
    at /usr/local/lib/node_modules/react-native/node_modules/metro/src/DeltaBundler/Transformer.js:211:26
    at Generator.next (<anonymous>)
    at asyncGeneratorStep (/usr/local/lib/node_modules/react-native/node_modules/metro/src/DeltaBundler/Transformer.js:46:24)
    at _next (/usr/local/lib/node_modules/react-native/node_modules/metro/src/DeltaBundler/Transformer.js:66:9)
    at /usr/local/lib/node_modules/react-native/node_modules/metro/src/DeltaBundler/Transformer.js:71:7
    at new Promise (<anonymous>)
    at /usr/local/lib/node_modules/react-native/node_modules/metro/src/DeltaBundler/Transformer.js:63:12
    at Transformer.transformFile (/usr/local/lib/node_modules/react-native/node_modules/metro/src/DeltaBundler/Transformer.js:236:7)
    at /usr/local/lib/node_modules/react-native/node_modules/metro/src/Bundler.js:87:34

react-native info command output

info Fetching system and libraries information...
System:
    OS: macOS Mojave 10.14.3
    CPU: (4) x64 Intel(R) Core(TM) i5-7360U CPU @ 2.30GHz
    Memory: 1.73 GB / 8.00 GB
    Shell: 3.2.57 - /bin/bash
  Binaries:
    Node: 10.16.0 - /usr/local/bin/node
    Yarn: 1.19.1 - /usr/local/bin/yarn
    npm: 6.13.4 - /usr/local/bin/npm
    Watchman: 4.9.0 - /usr/local/bin/watchman
  SDKs:
    iOS SDK:
      Platforms: iOS 12.2, macOS 10.14, tvOS 12.2, watchOS 5.2
    Android SDK:
      API Levels: 23, 25, 26, 27, 28, 29
      Build Tools: 27.0.3, 28.0.3
      System Images: android-29 | Google Play Intel x86 Atom
      Android NDK: 20.1.5948944
  IDEs:
    Android Studio: 3.4 AI-183.6156.11.34.5522156
    Xcode: 10.2.1/10E1001 - /usr/bin/xcodebuild
  npmPackages:
    react: 16.9.0 => 16.9.0 
    react-native: 0.61.5 => 0.61.5 
  npmGlobalPackages:
    create-react-native-app: 2.0.2
    react-native-cli: 2.0.1
    react-native: 0.61.5

回答1:

To solve my issue I have run command with --force option.

npm install -i -g --force react-native-cli

This issue was raise due to configure old project with old react-native version. and then trying to run latest react-native ver with new Project.

回答2:

install with npx run on windows 10

npx react-native run-android

on linux

npx react-native start 

回答3:

I resolved the issue in my Mac using

npx react-native start

回答4:

For me, I installed the wrong package.

Instead of this:

npm i -g react-native

Make sure you do this:

npm i -g react-native-cli

回答5:

I think that's about version of react-native-cli.

You should try to update.

npm i -g react-native-cli

回答6:

I can't comment so use npm install -i -g --force react-native-cli as stated by Punita. It works when it comes to fixing the SHA-1 issue.

But please don't use sudo for any npm related things. thanks.

回答7:

To solve my issue I have run command with --force option.

npm install -i -g --force react-native-cli

来源：https://stackoverflow.com/questions/59937865/react-native-bundle-error-error-sha-1-for-file-is-not-computed