Add support for mise version array

Author: dbowring

__tests__/utils.test.ts

@@ -140,6 +140,19 @@ describe('Version from file test', () => {
       expect(_fn(pythonVersionFilePath)).toEqual([pythonVersion]);
     }
   );
+  it.each([getVersionInputFromTomlFile, getVersionInputFromFile])(
+    'Version from mise .mise.toml array test',
+    async _fn => {
+      await io.mkdirP(tempDir);
+      const pythonVersionFileName = '.mise.toml';
+      const pythonVersionFilePath = path.join(tempDir, pythonVersionFileName);
+      const pythonVersion = '3.7.0';
+      const otherPythonVersion = '3.6.0';
+      const pythonVersionFileContent = `[tools]\npython = ["${pythonVersion}", "${otherPythonVersion}"]`;
+      fs.writeFileSync(pythonVersionFilePath, pythonVersionFileContent);
+      expect(_fn(pythonVersionFilePath)).toEqual([pythonVersion]);
+    }
+  );
   it.each([getVersionInputFromTomlFile, getVersionInputFromFile])(
     'Version from mise verbose .mise.toml test',
     async _fn => {
@@ -152,6 +165,19 @@ describe('Version from file test', () => {
       expect(_fn(pythonVersionFilePath)).toEqual([pythonVersion]);
     }
   );
+  it.each([getVersionInputFromTomlFile, getVersionInputFromFile])(
+    'Version from mise verbose .mise.toml array test',
+    async _fn => {
+      await io.mkdirP(tempDir);
+      const pythonVersionFileName = '.mise.toml';
+      const pythonVersionFilePath = path.join(tempDir, pythonVersionFileName);
+      const pythonVersion = '3.7.0';
+      const otherPythonVersion = '3.6.0';
+      const pythonVersionFileContent = `[tools]\npython = [{ version="${pythonVersion}", virtualenv=".venv" }, { version="${otherPythonVersion}", virtualenv=".venv2" }]`;
+      fs.writeFileSync(pythonVersionFilePath, pythonVersionFileContent);
+      expect(_fn(pythonVersionFilePath)).toEqual([pythonVersion]);
+    }
+  );
   it.each([getVersionInputFromTomlFile, getVersionInputFromFile])(
     'Version undefined',
     async _fn => {

src/utils.ts

@@ -205,17 +205,28 @@ function isString(value: unknown): value is string {
  * If the value is present, it is returned. Otherwise undefined is returned.
  */
 function extractValue(obj: any, keys: string[]): string | undefined {
+  if (obj === null || obj === undefined) {
+    return;
+  }
+
   if (keys.length > 0) {
+    if (Array.isArray(obj)) {
+      const first = obj[0];
+      if (isString(first)) {
+        return first;
+      }
+      return extractValue(first, keys);
+    }
+
     const value = obj[keys[0]];
+
     if (keys.length > 1 && value !== undefined) {
       return extractValue(value, keys.slice(1));
-    } else if (isString(value)) {
+    }
+
+    if (isString(value)) {
       return value;
-    } else {
-      return;
     }
-  } else {
-    return;
   }
 }