Convert to typescript

src/setupPython.ts

@@ -0,0 +1,50 @@
+import * as core from '@actions/core'
+import * as tc from '@actions/tool-cache'
+import * as path from 'path'
+import * as semver from 'semver'
+
+/**
+ * Setup for Python from the GitHub Actions tool cache
+ * Converted from https://github.com/actions/setup-python
+ *
+ * @param {string} versionSpec version of Python
+ * @param {string} arch architecture (x64|x32)
+ */
+export function setupPython(versionSpec, arch): Promise<void> {
+  return new Promise(resolve => {
+    const IS_WINDOWS = process.platform === 'win32'
+
+    // Find the version of Python we want in the tool cache
+    const installDir = tc.find('Python', versionSpec, arch)
+    core.debug(`installDir: ${installDir}`)
+
+    // Set paths
+    core.exportVariable('pythonLocation', installDir)
+    core.addPath(installDir)
+    if (IS_WINDOWS) {
+      core.addPath(path.join(installDir, 'Scripts'))
+    } else {
+      core.addPath(path.join(installDir, 'bin'))
+    }
+
+    if (IS_WINDOWS) {
+      // Add --user directory
+      // `installDir` from tool cache should look like $AGENT_TOOLSDIRECTORY/Python/<semantic version>/x64/
+      // So if `findLocalTool` succeeded above, we must have a conformant `installDir`
+      const version = path.basename(path.dirname(installDir))
+      const major = semver.major(version)
+      const minor = semver.minor(version)
+
+      const userScriptsDir = path.join(
+        process.env['APPDATA'] || '',
+        'Python',
+        `Python${major}${minor}`,
+        'Scripts'
+      )
+      core.addPath(userScriptsDir)
+    }
+    // On Linux and macOS, pip will create the --user directory and add it to PATH as needed.
+
+    resolve()
+  })
+}