initial commit

Author: dcodeIO

.gitignore

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+node_modules/
+package-lock.json

README.md

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+# Set up node using nvm
+
+This action sets up a specific node.js version on GitHub Actions using nvm.
+
+## Inputs
+
+### node-version
+
+The node.js version to install and use, according to nvm.
+
+### node-mirror
+
+The node.js mirror to use, e.g. `https://nodejs.org/download/v8-canary/` for canary.
+
+## Example usage:
+
+```yaml
+uses: dcodeIO/setup-node-nvm
+with:
+  node-version: lts/*
+```
+
+```yaml
+uses: dcodeIO/setup-node-nvm
+with:
+  node-version: node
+  node-mirror: https://nodejs.org/download/v8-canary/
+```

action.yml

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+name: Set up node
+description: Sets up a specific node.js version using nvm
+author: dcodeIO
+inputs:
+  node-version:
+    description: The node.js version to use according to nvm
+    default: node
+  node-mirror:
+    description: The node.js mirror to use
+    default: https://nodejs.org/dist/
+runs:
+  using: node12
+  main: index.js

index.js

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+const child_process = require("child_process");
+const core = require("@actions/core");
+const version = core.getInput("node-version");
+const mirror = core.getInput("node-mirror");
+var child = child_process.spawnSync("bash", [ "install.sh", version, mirror ], { stdio: "inherit", encoding: "utf8" });
+if (child.status != 0) throw Error("installation failed with " + child.status);
+var nodePath;
+var npmPath;
+try {
+  nodePath = /SETUP_NODE_NVM_NODE: ([^\n]+)/.exec(child.stdout)[1];
+  npmPath = /SETUP_NODE_NVM_NPM: ([^\n]+)/.exec(child.stdout)[1];
+} catch (e) {
+  throw Error("missing node/npm path in output");
+}
+console.log("Using node: " + nodePath);
+core.setPath(nodePath);
+console.log("Using npm: " + npmPath);
+core.setPath(npmPath);

install.sh

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+#!/bin/bash
+set -e
+curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.34.0/install.sh | bash
+export NVM_DIR="$HOME/.nvm"
+export NVM_NODEJS_ORG_MIRROR="$2"
+chmod +x "$NVM_DIR/nvm.sh"
+"$NVM_DIR/nvm.sh" --no-use
+nvm install $1
+nvm use $1
+npm -g install npm
+echo "SETUP_NODE_NVM_NODE: $(which node)"
+echo "SETUP_NODE_NVM_NPM: $(which npm)"

package.json

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+{
+  "name": "setup-node-nvm",
+  "version": "1.0.0",
+  "private": true,
+  "description": "setup-node-nvm action",
+  "main": "index.js",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/dcodeIO/setup-node-nvm.git"
+  },
+  "dependencies": {
+    "@actions/core": "^1.1.0"
+  }
+}