initial commit

.github/workflows/ci.yml

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+name: CI
+on: [push]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+      - name: Build
+        run: |
+          npm ci
+          npm run build
+      - uses: ./
+        with:
+          path: package.json

.gitignore

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+node_modules

README.md

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+# read-file-action
+
+Read file contents.
+
+## Usage
+
+```yaml
+steps:
+  - name: Read package.json
+    id: package
+    uses: juliangruber/read-file-action@v1
+    with:
+      path: ./package.json
+  - name: Echo package.json
+    run: echo ${{ steps.package.outputs.content }}
+```
+
+## License
+
+MIT

action.yml

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+name: Read file
+author: juliangruber
+description: 'Read file contents'
+branding:
+  icon: 'file'
+  color: purple
+inputs:
+  path:
+    description: 'File path'
+    required: true
+outputs:
+  content:
+    description: 'File content'
+runs:
+  using: 'node12'
+  main: 'dist/index.js'

index.js

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+'use strict'
+
+const core = require('@actions/core')
+const { promises: fs } = require('fs')
+
+const main = async () => {
+  const path = core.getInput('path')
+  const content = await fs.readFile(path, 'utf8')
+  core.setOutput('content', content)
+}
+
+main().catch(err => core.setFailed(err.message))

package.json

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+{
+  "name": "read-file-action",
+  "private": true,
+  "version": "0.0.0",
+  "license": "MIT",
+  "description": "Read file contents",
+  "repository": "juliangruber/read-file-action",
+  "scripts": {
+    "test": "prettier-standard index.js && standard index.js",
+    "build": "ncc build index.js",
+    "version": "npm run build && git add dist",
+    "release": "np && git tag -f v1 && git push --tags -f"
+  },
+  "np": {
+    "publish": false
+  },
+  "dependencies": {
+    "@actions/core": "^1.2.0"
+  },
+  "devDependencies": {
+    "@zeit/ncc": "^0.20.5",
+    "np": "^5.1.3",
+    "prettier-standard": "^15.0.1",
+    "standard": "^14.3.1"
+  }
+}