diff --git a/package.json b/package.json
index c08d61b..6d9d560 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,9 @@
     "build": "lerna run build"
   },
   "dependencies": {
-    "patch-package": "^6.2.2"
+    "@agoric/eslint-plugin": "^0.2.3",
+    "patch-package": "^6.2.2",
+    "prettier": "^1.19.1"
   },
   "ava": {
     "files": [
diff --git a/packages/stdlib/src/async.js b/packages/stdlib/src/async.js
index 48b2b27..2b55f9f 100644
--- a/packages/stdlib/src/async.js
+++ b/packages/stdlib/src/async.js
@@ -3,7 +3,7 @@ import { makePromise } from './makers';
 
 /**
  * Resolve promise when await asyncPredThunk() returns falsy.
- * 
+ *
  * @template T
  * @param {() => (T | Promise<T>)} asyncPredThunk Return truthy or a
  * Promise<truthy> to keep looping.
@@ -31,7 +31,7 @@ export { asyncWhile };
 /**
  * Return an async iterable that produces values with asyncValThunk.  Finish
  * with the last value when it is falsy.
- * 
+ *
  * @template T
  * @param {() => T | Promise<T>} asyncValThunk thunk to call to create the next
  * value. When falsy, finish the iterator.
@@ -53,4 +53,4 @@ const asyncAllTruthies = asyncValThunk => {
   });
 };
 harden(asyncAllTruthies);
-export { asyncAllTruthies };
\ No newline at end of file
+export { asyncAllTruthies };
diff --git a/packages/stdlib/src/main.js b/packages/stdlib/src/main.js
index 9ae9f5e..e3b8a4c 100644
--- a/packages/stdlib/src/main.js
+++ b/packages/stdlib/src/main.js
@@ -1,3 +1,9 @@
 // This module should be overridden by Jessie interpreters.
-export { makePromise, makeMap, makeSet, makeWeakMap, makeWeakSet } from './makers.js';
+export {
+  makePromise,
+  makeMap,
+  makeSet,
+  makeWeakMap,
+  makeWeakSet,
+} from './makers.js';
 export { asyncWhile, asyncAllTruthies } from './async.js';
diff --git a/packages/stdlib/src/makers.js b/packages/stdlib/src/makers.js
index 443ed6a..299f2b0 100644
--- a/packages/stdlib/src/makers.js
+++ b/packages/stdlib/src/makers.js
@@ -2,8 +2,10 @@
 /// <reference types="ses" />
 
 // TODO: Typing these would be laudable, but harder than it looks.
-export const makePromise = harden((executor) => harden(new Promise(executor)));
-export const makeMap = harden((entriesOrIterable) => harden(new Map(entriesOrIterable)));
-export const makeSet = harden((values) => harden(new Set(values)));
-export const makeWeakMap = harden((entries) => harden(new WeakMap(entries)));
-export const makeWeakSet = harden((values) => harden(new WeakSet(values)));
+export const makePromise = harden(executor => harden(new Promise(executor)));
+export const makeMap = harden(entriesOrIterable =>
+  harden(new Map(entriesOrIterable)),
+);
+export const makeSet = harden(values => harden(new Set(values)));
+export const makeWeakMap = harden(entries => harden(new WeakMap(entries)));
+export const makeWeakSet = harden(values => harden(new WeakSet(values)));
diff --git a/packages/stdlib/test/test-async.js b/packages/stdlib/test/test-async.js
index f22197a..2330f77 100644
--- a/packages/stdlib/test/test-async.js
+++ b/packages/stdlib/test/test-async.js
@@ -2,7 +2,7 @@
 import { test } from '@agoric/swingset-vat/tools/prepare-test-env-ava';
 import { asyncAllTruthies, asyncWhile } from '../src/async';
 
-test('asyncAllTruthies', async t => {
+test('asyncAllTruthies - for-await-of', async t => {
   const results = [];
   let state = 4;
   const thunk = async () => {
@@ -14,12 +14,20 @@ test('asyncAllTruthies', async t => {
     results.push(el);
   }
   t.deepEqual(results, [4, 3, 2, 1]);
+});
+
+test('asyncAllTruthies - manual iteration', async t => {
+  let state = 4;
+  const thunk = async () => {
+    const cur = await Promise.resolve(state);
+    state -= 1;
+    return cur;
+  };
 
-  state = 4;
-  const results2 = [];
   const ai = asyncAllTruthies(thunk)[Symbol.asyncIterator]();
 
   for (let count = 4; count > 0; count -= 1) {
+    // eslint-disable-next-line no-await-in-loop
     const r = await ai.next();
     t.is(r.value, count);
     t.is(r.done, false);
@@ -35,7 +43,7 @@ test('asyncWhile', async t => {
     const cur = await Promise.resolve(state);
     state -= 1;
     return cur;
-  }
+  };
   const last = await asyncWhile(thunk);
   t.is(last, 0);
   t.is(state, -1);
diff --git a/packages/stdlib/test/test-makers.js b/packages/stdlib/test/test-makers.js
index fc18b06..e51f846 100644
--- a/packages/stdlib/test/test-makers.js
+++ b/packages/stdlib/test/test-makers.js
@@ -10,12 +10,21 @@ test('makePromise', async t => {
 });
 
 test('makeMap', async t => {
-  const init = [['abc', 123], ['def', 456]];
+  const init = [
+    ['abc', 123],
+    ['def', 456],
+  ];
   const map = makeMap(init);
 
   t.deepEqual([...map.entries()], init);
-  t.deepEqual([...map.keys()], init.map(([k]) => k));
-  t.deepEqual([...map.values()], init.map(([_k, v]) => v));
+  t.deepEqual(
+    [...map.keys()],
+    init.map(([k]) => k),
+  );
+  t.deepEqual(
+    [...map.values()],
+    init.map(([_k, v]) => v),
+  );
 
   const bar = {};
   t.is(map.get('abc'), 123);
diff --git a/yarn.lock b/yarn.lock
index 18951b9..26eec10 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -72,6 +72,13 @@
   resolved "https://registry.yarnpkg.com/@agoric/eslint-config/-/eslint-config-0.2.1.tgz#e18d548fbf2d41ed6dce0303402ffed82b4973ba"
   integrity sha512-0VJdY28OA1q57QnZHPUlmKO3aMe0MAIoYimwvpr2W5PViq5eZQb9CclpMD6Bliosn54Js0S5CCA1V8VBJfIrPA==
 
+"@agoric/eslint-plugin@^0.2.3":
+  version "0.2.3"
+  resolved "https://registry.yarnpkg.com/@agoric/eslint-plugin/-/eslint-plugin-0.2.3.tgz#29734731b2bcfcb4bb259f531fcf0125772c3bfd"
+  integrity sha512-m0GcNDf4L8WCQMbDrdq7dv4RVYly7YvDm6Xs2C3/Zq2FQGli9TjuR38SA41HXpf1O9Vaz20YpchuLjx/CP8uKQ==
+  dependencies:
+    requireindex "~1.1.0"
+
 "@agoric/eventual-send@^0.13.11":
   version "0.13.11"
   resolved "https://registry.yarnpkg.com/@agoric/eventual-send/-/eventual-send-0.13.11.tgz#9158a0b36dad625527c9ae28e5210b5ad520a53f"