Merge pull request peggyjs#484 from hildjj/test-library

Fixes peggyjs#481.  Adds --library test to CLI

CHANGELOG.md

@@ -17,6 +17,10 @@ Released: TBD
 - [#479](https://github.com/peggyjs/peggy/issues/379)
   Refactor `cli/fromMem.js` into separate project
   [from-mem](https://github.com/peggyjs/from-mem/).
+- [#481](https://github.com/peggyjs/peggy/issues/481) Add CLI test for
+  --library
+- [#483](https://github.com/peggyjs/peggy/issues/483) fix errors in
+  typescript file.
 
 4.0.0
 -----

test/cli/run.spec.ts

@@ -1265,6 +1265,21 @@ error: Rule "unknownRule" is not defined
     expect(parse("baz")).toBe("baz");
   });
 
+  it("produces library-style output", async() => {
+    await exec({
+      args: ["-t", "boo", "--library"],
+      stdin: "foo = 'boo'",
+      expected: `\
+{
+  'peg$result': 'boo',
+  'peg$currPos': 3,
+  'peg$FAILED': {},
+  'peg$maxFailExpected': [],
+  'peg$maxFailPos': 0
+}\n`,
+    });
+  });
+
   describe("--watch option", () => {
     it("rejects stdin for watching", async() => {
       await exec({
@@ -1349,3 +1364,4 @@ error: Rule "unknownRule" is not defined
     });
   });
 });
+