The content hash different on different terminal session

[rliuyi]

Version

3.4.0

Reproduction link

https://github.com/rliuyi/vue-content-hash-inconsistent

Environment info

System:
    OS: macOS 10.14.2
    CPU: (8) x64 Intel(R) Core(TM) i7-4870HQ CPU @ 2.50GHz
  Binaries:
    Node: 11.3.0 - ~/.nvm/versions/node/v11.3.0/bin/node
    Yarn: Not Found
    npm: 6.7.0 - ~/.nvm/versions/node/v11.3.0/bin/npm
  Browsers:
    Chrome: 71.0.3578.98
    Firefox: Not Found
    Safari: 12.0.2
  npmPackages:
    @vue/babel-helper-vue-jsx-merge-props:  1.0.0-beta.2
    @vue/babel-plugin-transform-vue-jsx:  1.0.0-beta.2
    @vue/babel-preset-app:  3.4.0
    @vue/babel-preset-jsx:  1.0.0-beta.2
    @vue/babel-sugar-functional-vue:  1.0.0-beta.2
    @vue/babel-sugar-inject-h:  1.0.0-beta.2
    @vue/babel-sugar-v-model:  1.0.0-beta.2
    @vue/babel-sugar-v-on:  1.0.0-beta.2
    @vue/cli-overlay:  3.4.0
    @vue/cli-plugin-babel: ^3.4.0 => 3.4.0
    @vue/cli-plugin-eslint: ^3.4.0 => 3.4.0
    @vue/cli-service: ^3.4.0 => 3.4.0
    @vue/cli-shared-utils:  3.4.0
    @vue/component-compiler-utils:  2.5.2
    @vue/eslint-config-prettier: ^4.0.1 => 4.0.1
    @vue/preload-webpack-plugin:  1.1.0
    @vue/web-component-wrapper:  1.2.0
    eslint-plugin-vue: ^5.1.0 => 5.1.0
    vue: ^2.5.22 => 2.5.22
    vue-eslint-parser:  2.0.3
    vue-hot-reload-api:  2.3.1
    vue-loader:  15.6.2
    vue-router: ^3.0.1 => 3.0.2
    vue-style-loader:  4.1.2
    vue-template-compiler: ^2.5.22 => 2.5.22
    vue-template-es2015-compiler:  1.8.2
    vuex: ^3.1.0 => 3.1.0
  npmGlobalPackages:
    @vue/cli: 3.4.0

Steps to reproduce

open a terminal session:

• run npm run build

open another terminal session:

• run npm run build

No matter how many times when running npm run build within a specified terminal session, the [contenthash] for app.js|about.js|tooltip.js|runtime.js is consistent. But for different terminal session, generated hash is different. However, for chunk-vendors.js|app.css, its content hash are exactly same regardless of terminal session.

What is expected?

The content hash is based on the content of an asset regardless of terminal session.

What is actually happening?

For entry output and split chunk file, the content hash is dependent on terminal session.

---

Please take a look at the screen record for the problem:
https://mega.nz/#!eThzjC6A!NTQ121Vhks0ffF6pPuxphEbtWIo71w3Le7qGulQLyAA

[sodatea]

Introduced by 047872c

Due to environment variables like TERM_SESSION_ID & ITERM_SESSION_ID

[rliuyi]

Thanks for your fix, I just verified and it works well.