--- /dev/null
+/* @flow */
+"use strict";
+
+const configurationError = require("./configurationError");
+const resolveFrom = require("resolve-from");
+
+module.exports = function(
+ basedir /*: string*/,
+ lookup /*: string*/
+) /*: string*/ {
+ // First try to resolve from the provided directory,
+ // then try to resolve from process.cwd.
+ let path = resolveFrom.silent(basedir, lookup);
+ if (!path) {
+ path = resolveFrom.silent(process.cwd(), lookup);
+ }
+ if (!path) {
+ throw configurationError(
+ `Could not find "${lookup}". Do you need a \`configBasedir\`?`
+ );
+ }
+ return path;
+};