feat(indent): ecma - support common use-cases

tests/indent/ecma/binary_expression.js

@@ -0,0 +1,4 @@
+if_this_is_correct &&
+  run_this_thing()
+    .filter()
+    .map()

tests/indent/ecma/callback.js

@@ -0,0 +1,6 @@
+const itemById = Array.from(
+  new Set()
+).reduce((byId, item) => {
+  byId[item.id] = item
+  return result;
+}, {})

tests/indent/ecma/func.js

@@ -0,0 +1,37 @@
+const arrow_func = (
+  a,
+  b,
+  c
+) => {
+  log(a, b, c)
+}
+
+const arrow_func_without_brace = (a, b, c) =>
+  log(
+    a,
+    b,
+    c
+  )
+
+function func_def(
+  a,
+  b,
+  { c = '' }
+) {
+  log(a, b, c)
+}
+
+func_call(
+  a,
+  (b) => b
+)
+
+chained_func_call()
+  .map()
+  .filter()
+
+func_call(
+  chained_func_call()
+    .map()
+    .filter()
+)

tests/indent/ecma/object.js

@@ -0,0 +1,5 @@
+const obj = {
+  a: 1,
+  b: "2",
+  ["c"]: `three`
+}

tests/indent/ecma/ternary.js

@@ -0,0 +1,6 @@
+const value =
+  condition
+    ? typeof number === 'string'
+      ? Number(number)
+      : number
+    : null;

tests/indent/ecma/variable.js

@@ -0,0 +1,6 @@
+let a =
+  if_this_is_right() && then_this()
+
+a = func_call()
+  .map()
+  .filter()