js-on-sx: baseline commit (278/280 unit, 148/148 slice, runner stub)

Initial commit of the lib/js/ tree and plans/ directory. A previous
session left template-string work in progress — 278/280 unit tests pass
(2 failing: tpl part-count off-by-one, escaped-backtick ident lookup).
test262-runner.py and scoreboard are placeholders (0/8 with 7 timeouts);
fixing the runner is the next queue item.

lib/js/test262-slice/promises/executor_throws.expected

@@ -0,0 +1 @@
+bang

lib/js/test262-slice/promises/executor_throws.js

@@ -0,0 +1,4 @@
+var r = null;
+new Promise((res, rej) => { throw "bang"; }).catch(e => { r = e; });
+__drain();
+r

lib/js/test262-slice/promises/finally_passthrough.expected

@@ -0,0 +1 @@
+1:5

lib/js/test262-slice/promises/finally_passthrough.js

@@ -0,0 +1,5 @@
+var r = null;
+var hit = 0;
+Promise.resolve(5).finally(() => { hit = 1; }).then(v => { r = v; });
+__drain();
+"" + hit + ":" + r

lib/js/test262-slice/promises/microtask_ordering.expected

@@ -0,0 +1 @@
+A,B,C,D

lib/js/test262-slice/promises/microtask_ordering.js

@@ -0,0 +1,5 @@
+var log = [];
+Promise.resolve(0).then(() => { log.push("A"); }).then(() => { log.push("C"); });
+Promise.resolve(0).then(() => { log.push("B"); }).then(() => { log.push("D"); });
+__drain();
+log.join(",")

lib/js/test262-slice/promises/new_promise_reject.expected

@@ -0,0 +1 @@
+oops

lib/js/test262-slice/promises/new_promise_reject.js

@@ -0,0 +1,4 @@
+var r = null;
+new Promise((resolve, reject) => { reject("oops"); }).catch(e => { r = e; });
+__drain();
+r

lib/js/test262-slice/promises/new_promise_resolve.expected

@@ -0,0 +1 @@
+42

lib/js/test262-slice/promises/new_promise_resolve.js

@@ -0,0 +1,4 @@
+var r = null;
+new Promise((resolve, reject) => { resolve(42); }).then(v => { r = v; });
+__drain();
+r

lib/js/test262-slice/promises/promise_all.expected

@@ -0,0 +1 @@
+6

lib/js/test262-slice/promises/promise_all.js

@@ -0,0 +1,5 @@
+var r = null;
+Promise.all([Promise.resolve(1), Promise.resolve(2), Promise.resolve(3)])
+  .then(vs => { r = vs[0] + vs[1] + vs[2]; });
+__drain();
+r

lib/js/test262-slice/promises/promise_all_empty.expected

@@ -0,0 +1 @@
+0

lib/js/test262-slice/promises/promise_all_empty.js

@@ -0,0 +1,4 @@
+var r = null;
+Promise.all([]).then(vs => { r = vs.length; });
+__drain();
+r

lib/js/test262-slice/promises/promise_all_nonpromise.expected

@@ -0,0 +1 @@
+3

lib/js/test262-slice/promises/promise_all_nonpromise.js

@@ -0,0 +1,4 @@
+var r = null;
+Promise.all([1, 2, 3]).then(vs => { r = vs.length; });
+__drain();
+r

lib/js/test262-slice/promises/promise_all_reject.expected

@@ -0,0 +1 @@
+x

lib/js/test262-slice/promises/promise_all_reject.js

@@ -0,0 +1,5 @@
+var r = null;
+Promise.all([Promise.resolve(1), Promise.reject("x"), Promise.resolve(3)])
+  .catch(e => { r = e; });
+__drain();
+r

lib/js/test262-slice/promises/promise_race.expected

@@ -0,0 +1 @@
+first

lib/js/test262-slice/promises/promise_race.js

@@ -0,0 +1,5 @@
+var r = null;
+Promise.race([Promise.resolve("first"), Promise.resolve("second")])
+  .then(v => { r = v; });
+__drain();
+r

lib/js/test262-slice/promises/promise_resolve_already_promise.expected

@@ -0,0 +1 @@
+true

lib/js/test262-slice/promises/promise_resolve_already_promise.js

@@ -0,0 +1,3 @@
+var p1 = Promise.resolve(5);
+var p2 = Promise.resolve(p1);
+p1 === p2

lib/js/test262-slice/promises/reject_catch.expected

@@ -0,0 +1 @@
+bad

lib/js/test262-slice/promises/reject_catch.js

@@ -0,0 +1,4 @@
+var msg = null;
+Promise.reject("bad").catch(e => { msg = e; });
+__drain();
+msg

lib/js/test262-slice/promises/resolve_adopts.expected

@@ -0,0 +1 @@
+77

lib/js/test262-slice/promises/resolve_adopts.js

@@ -0,0 +1,5 @@
+var r = null;
+var inner = Promise.resolve(77);
+new Promise((res, rej) => { res(inner); }).then(v => { r = v; });
+__drain();
+r

lib/js/test262-slice/promises/resolve_then.expected

@@ -0,0 +1 @@
+8

lib/js/test262-slice/promises/resolve_then.js

@@ -0,0 +1,4 @@
+var r = null;
+Promise.resolve(7).then(x => { r = x + 1; });
+__drain();
+r

lib/js/test262-slice/promises/then_chain.expected

@@ -0,0 +1 @@
+20

lib/js/test262-slice/promises/then_chain.js

@@ -0,0 +1,4 @@
+var r = null;
+Promise.resolve(1).then(x => x + 1).then(x => x * 10).then(x => { r = x; });
+__drain();
+r

lib/js/test262-slice/promises/then_throw_catch.expected

@@ -0,0 +1 @@
+boom

lib/js/test262-slice/promises/then_throw_catch.js

@@ -0,0 +1,6 @@
+var r = null;
+Promise.resolve(1)
+  .then(x => { throw "boom"; })
+  .catch(e => { r = e; });
+__drain();
+r