[Import Maps] Implement Import Maps v0.5 behind a flag

Design doc: https://docs.google.com/document/d/1vFQzbmxg9ilpg8CT_P8roEYcpTfZ06Q5N4J9-ZQqqZo/edit This CL implements an initial version of Import Maps that supports - Inline import maps (i.e. no src attribute), - Layered API/Built-in modules fallback, and - Basic bare specifier mapping. The import maps are behind the flag of LayeredAPI. Bug: 848607 Change-Id: I31efa6f9ce470375a07592f627b525f48dc2d504
web-platform-tests · Feb 13, 2019 · 362ed35 · 362ed35
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commit 362ed35
Showing 1 changed file with 43 additions and 0 deletions.
diff --git a/import-maps/builtin-empty.tentative.html b/import-maps/builtin-empty.tentative.html
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+<!DOCTYPE html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="resources/test-helper.js"></script>
+
+<script>
+const importMap = `
+{
+  "imports": {
+    "./resources/log.js?pipe=sub&name=empty": [ "@std/" ],
+    "./resources/log.js?pipe=sub&name=empty-fallback": [
+      "@std/",
+      "./resources/log.js?pipe=sub&name=empty-fallback"
+    ]
+  }
+}
+`;
+
+const tests = {
+  // Arrays of expected results for:
+  // - <script src type="module">,
+  // - <script src> (classic script),
+  // - static import, and
+  // - dynamic import.
+
+  // Discussions about notations are ongoing, e.g.
+  // https://github.com/tc39/proposal-javascript-standard-library/issues/12
+  // Currently the tests expects two notations are accepted.
+  // TODO: Once the discussions converge, update this and related tests.
+  "std:":
+    [Result.FETCH_ERROR, Result.FETCH_ERROR, Result.FETCH_ERROR, Result.FETCH_ERROR],
+  "@std/":
+    [Result.FETCH_ERROR, Result.PARSE_ERROR, Result.FETCH_ERROR, Result.FETCH_ERROR],
+
+  "./resources/log.js?pipe=sub&name=empty":
+    [Result.URL, Result.URL, Result.PARSE_ERROR, Result.PARSE_ERROR],
+  "./resources/log.js?pipe=sub&name=empty-fallback":
+    [Result.URL, Result.URL, Result.URL, Result.URL],
+};
+
+doTests(importMap, null, tests);
+</script>
+<body>