add sapper

Author: shortdiv

src/detectors/sapper.js

@@ -0,0 +1,36 @@
+const {
+  hasRequiredDeps,
+  hasRequiredFiles,
+  getYarnOrNPMCommand,
+  scanScripts
+} = require("./utils/jsdetect");
+
+module.exports = function() {
+  // REQUIRED FILES
+  if (!hasRequiredFiles(["package.json"])) return false;
+  // REQUIRED DEPS
+  if (!hasRequiredDeps(["sapper"])) return false;
+
+  /** everything below now assumes that we are within vue */
+
+  const possibleArgsArrs = scanScripts({
+    preferredScriptsArr: ["dev", "start"],
+    preferredCommand: "sapper dev"
+  });
+
+  if (possibleArgsArrs.length === 0) {
+    // ofer to run it when the user doesnt have any scripts setup! 🤯
+    possibleArgsArrs.push(["sapper", "dev"]);
+  }
+
+  return {
+    type: "vue-cli",
+    command: getYarnOrNPMCommand(),
+    port: 8888,
+    proxyPort: 3000,
+    env: { ...process.env },
+    possibleArgsArrs,
+    urlRegexp: new RegExp(`(http://)([^:]+:)${3000}(/)?`, "g"),
+    dist: "dist"
+  };
+};