Refactor resolve option

index.js

@@ -11,6 +11,7 @@ function AtImport(options) {
     root: process.cwd(),
     path: [],
     skipDuplicates: true,
+    resolve: resolveId,
     load: loadContent,
   }, options)
 
@@ -221,14 +222,12 @@ function resolveImportId(
   processor
 ) {
   var atRule = stmt.node
-  var resolve = options.resolve ? options.resolve : resolveId
   var base = atRule.source && atRule.source.input && atRule.source.input.file
     ? path.dirname(atRule.source.input.file)
     : options.root
 
-  return Promise.resolve().then(function() {
-    return resolve(stmt.uri, base, options)
-  }).then(function(resolved) {
+  return Promise.resolve(options.resolve(stmt.uri, base, options))
+  .then(function(resolved) {
     if (!Array.isArray(resolved)) {
       resolved = [ resolved ]
     }
@@ -242,15 +241,17 @@ function resolveImportId(
         processor
       )
     }))
-  }).then(function(result) {
+  })
+  .then(function(result) {
     // Merge loaded statements
     stmt.children = result.reduce(function(result, statements) {
       if (statements) {
         result = result.concat(statements)
       }
       return result
     }, [])
-  }).catch(function(err) {
+  })
+  .catch(function(err) {
     result.warn(err.message, { node: atRule })
   })
 }

test/custom-resolve.js

@@ -0,0 +1,45 @@
+import test from "ava"
+import compareFixtures from "./lib/compare-fixtures"
+import path from "path"
+
+test("should accept file", t => {
+  return compareFixtures(t, "custom-resolve-file", {
+    resolve: () => {
+      return path.resolve("fixtures/imports/custom-resolve-1.css")
+    },
+  })
+})
+
+test("should accept promised file", t => {
+  return compareFixtures(t, "custom-resolve-file", {
+    resolve: () => {
+      return Promise.resolve(
+        path.resolve("fixtures/imports/custom-resolve-1.css")
+      )
+    },
+  })
+})
+
+test("should accept array of files", t => {
+  return compareFixtures(t, "custom-resolve-array", {
+    resolve: () => {
+      return [
+        path.resolve("fixtures/imports/custom-resolve-1.css"),
+        path.resolve("fixtures/imports/custom-resolve-2.css"),
+        path.resolve("fixtures/imports/custom-resolve-1.css"),
+      ]
+    },
+  })
+})
+
+test("should accept promised array of files", t => {
+  return compareFixtures(t, "custom-resolve-array", {
+    resolve: () => {
+      return Promise.resolve([
+        path.resolve("fixtures/imports/custom-resolve-1.css"),
+        path.resolve("fixtures/imports/custom-resolve-2.css"),
+        path.resolve("fixtures/imports/custom-resolve-1.css"),
+      ])
+    },
+  })
+})

test/fixtures/custom-resolve-array.expected.css

@@ -1,2 +1,2 @@
-.custom-array-1 {}
-.custom-array-2 {}
+custom-resolve-1 {}
+custom-resolve-2 {}

test/fixtures/custom-resolve-file.css

@@ -0,0 +1 @@
+@import "any-path";

test/fixtures/custom-resolve-file.expected.css

@@ -0,0 +1 @@
+custom-resolve-1 {}

test/fixtures/imports/custom-resolve-1.css

@@ -0,0 +1 @@
+custom-resolve-1 {}

test/fixtures/imports/custom-resolve-2.css

@@ -0,0 +1 @@
+custom-resolve-2 {}

test/import.js

@@ -143,36 +143,3 @@ test("should work with no styles without throwing an error", t => {
       t.is(result.warnings().length, 0)
     })
 })
-
-test("should be able to consume modules in the custom-resolve way", t => {
-  const resolve = require("resolve")
-  const sassResolve = (id, base, opts) => {
-    return resolve.sync(id, {
-      basedir: base,
-      extensions: [ ".scss", ".css" ],
-      paths: opts.path,
-      packageFilter: pkg => {
-        pkg.main = pkg.sass || pkg.style || "index"
-        return pkg
-      },
-    })
-  }
-  return compareFixtures(t, "custom-resolve-modules", {
-    root: ".",
-    path: "fixtures/imports",
-    resolve: sassResolve,
-  })
-})
-
-test("should be able to process array of files in the custom-resolve way", t => {
-  const arrayResolve = () => {
-    return [
-      path.resolve("fixtures/imports/custom-array-1.css"),
-      path.resolve("fixtures/imports/custom-array-2.css"),
-      path.resolve("fixtures/imports/custom-array-1.css"),
-    ]
-  }
-  return compareFixtures(t, "custom-resolve-array", {
-    resolve: arrayResolve,
-  })
-})