More, relatively easy TS conversion

package.json

@@ -52,7 +52,7 @@
     "lint": "prettier --check . && eslint .",
     "deploy:dev": "gcloud run deploy incentives-api-dev --project rewiring-america-dev --source .",
     "deploy:production": "gcloud run deploy incentives-api --project rewiring-america --source .",
-    "test": "yarn lint && dotenv -- tap --node-arg=--no-warnings --node-arg=--loader=ts-node/esm \"test/**/*.test.{js,ts}\""
+    "test": "yarn lint && dotenv -- tap --node-arg=--no-warnings --node-arg=--loader=ts-node/esm \"test/**/*.test.ts\""
   },
   "type": "module"
 }

src/@types/fastify-cli.d.ts

@@ -0,0 +1,2 @@
+// Trivial module declaration to satisfy tsc
+declare module 'fastify-cli/helper.js';

test/helper.js → test/helper.ts

@@ -16,7 +16,7 @@ function config() {
 }
 
 // automatically build and tear down our instance
-async function build(t) {
+async function build(t: Tap.Test) {
   // you can set all the options supported by the fastify CLI command
   const argv = [AppPath, '--options'];
 

test/lib/fetch-amis-for-address.test.js → test/lib/fetch-amis-for-address.test.ts

@@ -11,7 +11,7 @@ beforeEach(async t => {
     driver: sqlite3.Database,
   });
   t.context.oldGeocode = geocoder.geocode;
-  geocoder.geocode = function (query, fields) {
+  geocoder.geocode = function (query: string, fields: string[]) {
     return mockGeocoder.geocode(query, fields);
   };
 });

test/lib/incentives-calculation.test.js → test/lib/incentives-calculation.test.ts

@@ -28,7 +28,7 @@ afterEach(async t => {
 
 test('correctly evaluates scenerio "Single w/ $120k Household income"', async t => {
   const data = calculateIncentives(AMIS_FOR_11211, {
-    zip: '11211',
+    location: { zip: '11211' },
     owner_status: 'homeowner',
     household_income: 120000,
     tax_filing: 'single',
@@ -39,7 +39,7 @@ test('correctly evaluates scenerio "Single w/ $120k Household income"', async t
 
 test('correctly evaluates scenerio "Joint w/ 5 persons and $60k Household income"', async t => {
   const data = calculateIncentives(AMIS_FOR_11211, {
-    zip: '11211',
+    location: { zip: '11211' },
     owner_status: 'homeowner',
     household_income: 60000,
     tax_filing: 'joint',
@@ -50,7 +50,7 @@ test('correctly evaluates scenerio "Joint w/ 5 persons and $60k Household income
 
 test('correctly evaluates scenerio "Joint w/ $300k Household income"', async t => {
   const data = calculateIncentives(AMIS_FOR_11211, {
-    zip: '11211',
+    location: { zip: '11211' },
     owner_status: 'homeowner',
     household_income: 300000,
     tax_filing: 'joint',
@@ -61,6 +61,7 @@ test('correctly evaluates scenerio "Joint w/ $300k Household income"', async t =
 
 test('correctly evaluates scenerio "Single w/ $120k Household income in the Bronx"', async t => {
   const data = calculateIncentives(AMIS_FOR_11211, {
+    location: { zip: '11211' },
     owner_status: 'homeowner',
     household_income: 120000,
     tax_filing: 'single',
@@ -79,12 +80,18 @@ test('correctly evaluates scenerio "Single w/ $120k Household income in the Bron
   t.equal(data.tax_credit_incentives.length, 10);
 
   // count the incentives by key used to de-dupe in UI:
-  const rebateCounts = _.countBy(i => i.item + i.item_type);
+  const rebateCounts = _.countBy(
+    data.pos_rebate_incentives,
+    i => i.item + i.item_type,
+  );
   t.equal(
     Object.values(rebateCounts).every(c => c === 1),
     true,
   );
-  const taxCreditCounts = _.countBy(i => i.item + i.item_type);
+  const taxCreditCounts = _.countBy(
+    data.tax_credit_incentives,
+    i => i.item + i.item_type,
+  );
   t.equal(
     Object.values(taxCreditCounts).every(c => c === 1),
     true,
@@ -153,6 +160,7 @@ test('correctly evaluates scenerio "Single w/ $120k Household income in the Bron
 
 test('correctly evaluates scenerio "Married filing jointly w/ 2 kids and $250k Household income in San Francisco"', async t => {
   const data = calculateIncentives(AMIS_FOR_94117, {
+    location: { zip: '94117' },
     owner_status: 'homeowner',
     household_income: 250000,
     tax_filing: 'joint',
@@ -171,12 +179,18 @@ test('correctly evaluates scenerio "Married filing jointly w/ 2 kids and $250k H
   t.equal(data.tax_credit_incentives.length, 10);
 
   // count the incentives by key used to de-dupe in UI:
-  const rebateCounts = _.countBy(i => i.item + i.item_type);
+  const rebateCounts = _.countBy(
+    data.pos_rebate_incentives,
+    i => i.item + i.item_type,
+  );
   t.equal(
     Object.values(rebateCounts).every(c => c === 1),
     true,
   );
-  const taxCreditCounts = _.countBy(i => i.item + i.item_type);
+  const taxCreditCounts = _.countBy(
+    data.tax_credit_incentives,
+    i => i.item + i.item_type,
+  );
   t.equal(
     Object.values(taxCreditCounts).every(c => c === 1),
     true,
@@ -245,6 +259,7 @@ test('correctly evaluates scenerio "Married filing jointly w/ 2 kids and $250k H
 
 test('correctly evaluates scenerio "Hoh w/ 6 kids and $500k Household income in Missisippi"', async t => {
   const data = calculateIncentives(AMIS_FOR_39503, {
+    location: { zip: '39503' },
     owner_status: 'homeowner',
     household_income: 500000,
     tax_filing: 'hoh',
@@ -263,12 +278,18 @@ test('correctly evaluates scenerio "Hoh w/ 6 kids and $500k Household income in
   t.equal(data.tax_credit_incentives.length, 10);
 
   // count the incentives by key used to de-dupe in UI:
-  const rebateCounts = _.countBy(i => i.item + i.item_type);
+  const rebateCounts = _.countBy(
+    data.pos_rebate_incentives,
+    i => i.item + i.item_type,
+  );
   t.equal(
     Object.values(rebateCounts).every(c => c === 1),
     true,
   );
-  const taxCreditCounts = _.countBy(i => i.item + i.item_type);
+  const taxCreditCounts = _.countBy(
+    data.tax_credit_incentives,
+    i => i.item + i.item_type,
+  );
   t.equal(
     Object.values(taxCreditCounts).every(c => c === 1),
     true,
@@ -338,23 +359,23 @@ test('correctly evaluates scenerio "Hoh w/ 6 kids and $500k Household income in
 
 test('correctly sorts incentives"', async t => {
   const data = calculateIncentives(AMIS_FOR_11211, {
-    zip: '11211',
+    location: { zip: '11211' },
     owner_status: 'homeowner',
     household_income: 120000,
     tax_filing: 'single',
     household_size: 1,
   });
-  for (let incentives of [
+  for (const incentives of [
     data.pos_rebate_incentives,
     data.tax_credit_incentives,
   ]) {
     let prevIncentive = incentives[0];
     incentives.slice(1).forEach(incentive => {
-      if (prevIncentive.amount_type === incentive.amount_type) {
+      if (prevIncentive.amount.type === incentive.amount.type) {
         t.ok(prevIncentive.amount >= incentive.amount);
       } else {
-        t.equal(prevIncentive.amount_type, 'percent');
-        t.equal(incentive.amount_type, 'dollar_amount');
+        t.equal(prevIncentive.amount.type, 'percent');
+        t.equal(incentive.amount.type, 'dollar_amount');
       }
       prevIncentive = incentive;
     });

test/mocks/geocoder.js → test/mocks/geocoder.ts

@@ -5,7 +5,7 @@ const LMI_GEOCODE_FIXTURE = JSON.parse(
 );
 
 class MockGeocoder {
-  geocode(address, fields) {
+  geocode(address: string, fields: string[]) {
     if (
       address === '4986 Zuni St, Denver, CO 80221' &&
       fields.length === 1 &&

test/routes/v0.test.js → test/routes/v0.test.ts

@@ -2,6 +2,7 @@ import { test, beforeEach } from 'tap';
 import { build } from '../helper.js';
 import Ajv from 'ajv';
 import fs from 'fs';
+import qs from 'qs';
 
 // NOTE: path is relative to test command, not this file (apparently)
 const incentiveSchema = JSON.parse(
@@ -15,10 +16,13 @@ beforeEach(() => {
   process.setMaxListeners(100);
 });
 
-async function getCalculatorResponse(t, query) {
+async function getCalculatorResponse(
+  t: Tap.Test,
+  query: Record<string, unknown>,
+) {
   const app = await build(t);
 
-  const searchParams = new URLSearchParams(query);
+  const searchParams = qs.stringify(query, { encodeValuesOnly: true });
   const url = `/api/v0/calculator?${searchParams}`;
 
   const res = await app.inject({ url });
@@ -38,15 +42,15 @@ test('response is valid and correct', async t => {
 
   const calculatorResponse = JSON.parse(res.payload);
 
-  const ajv = new Ajv({
+  const ajv = new Ajv.default({
     schemas: [incentiveSchema, responseSchema],
     coerceTypes: true,
     useDefaults: true,
     removeAdditional: true,
     allErrors: false,
   });
 
-  const responseValidator = ajv.getSchema('WebsiteCalculatorResponse');
+  const responseValidator = ajv.getSchema('WebsiteCalculatorResponse')!;
 
   // validate the response is a WebsiteCalculatorResponse
   await responseValidator(calculatorResponse);
@@ -227,7 +231,7 @@ const BAD_QUERIES = [
 test('bad queries', async t => {
   t.plan(BAD_QUERIES.length * 3, 'expect 3 assertions per bad query');
 
-  for (let query of BAD_QUERIES) {
+  for (const query of BAD_QUERIES) {
     const res = await getCalculatorResponse(t, query);
     const calculatorResponse = JSON.parse(res.payload);
     t.equal(res.statusCode, 400, 'response status is 400');
@@ -306,12 +310,12 @@ const ESTIMATION_TESTS = [
     },
     1450,
   ],
-];
+] as const;
 
 test('estimated savings', async t => {
   t.plan(ESTIMATION_TESTS.length, 'expect 1 assertion per estimate');
 
-  for (let [query, expected_amount] of ESTIMATION_TESTS) {
+  for (const [query, expected_amount] of ESTIMATION_TESTS) {
     const res = await getCalculatorResponse(t, query);
     const calculatorResponse = JSON.parse(res.payload);
     t.equal(calculatorResponse.estimated_annual_savings, expected_amount);
@@ -325,17 +329,17 @@ test('/incentives', async t => {
   t.equal(incentivesResponse.incentives.length, 30);
   t.equal(res.statusCode, 200, 'response status is 200');
 
-  const ajv = new Ajv({
+  const ajv = new Ajv.default({
     schemas: [incentiveSchema],
     coerceTypes: true,
     useDefaults: true,
     removeAdditional: true,
     allErrors: false,
   });
 
-  const validator = ajv.getSchema('WebsiteIncentive');
+  const validator = ajv.getSchema('WebsiteIncentive')!;
 
-  for (var incentive of incentivesResponse.incentives) {
+  for (const incentive of incentivesResponse.incentives) {
     await validator(incentive);
     t.equal(validator.errors, null);
   }

test/routes/v1.test.js → test/routes/v1.test.ts

@@ -12,7 +12,10 @@ beforeEach(() => {
   process.setMaxListeners(100);
 });
 
-async function getCalculatorResponse(t, query) {
+async function getCalculatorResponse(
+  t: Tap.Test,
+  query: Record<string, unknown>,
+) {
   const app = await build(t);
 
   const searchParams = qs.stringify(query, { encodeValuesOnly: true });
@@ -34,15 +37,15 @@ test('response is valid and correct', async t => {
 
   const calculatorResponse = JSON.parse(res.payload);
 
-  const ajv = new Ajv({
+  const ajv = new Ajv.default({
     schemas: [API_CALCULATOR_RESPONSE_SCHEMA],
     coerceTypes: true,
     useDefaults: true,
     removeAdditional: true,
     allErrors: false,
   });
 
-  const responseValidator = ajv.getSchema('APICalculatorResponse');
+  const responseValidator = ajv.getSchema('APICalculatorResponse')!;
 
   // validate the response is an APICalculatorResponse
   await responseValidator(calculatorResponse);
@@ -73,15 +76,15 @@ test('response with state and utility is valid and correct', async t => {
 
   const calculatorResponse = JSON.parse(res.payload);
 
-  const ajv = new Ajv({
+  const ajv = new Ajv.default({
     schemas: [API_CALCULATOR_RESPONSE_SCHEMA],
     coerceTypes: true,
     useDefaults: true,
     removeAdditional: true,
     allErrors: false,
   });
 
-  const responseValidator = ajv.getSchema('APICalculatorResponse');
+  const responseValidator = ajv.getSchema('APICalculatorResponse')!;
 
   // validate the response is an APICalculatorResponse
   await responseValidator(calculatorResponse);
@@ -243,7 +246,7 @@ const BAD_QUERIES = [
 test('bad queries', async t => {
   t.plan(BAD_QUERIES.length * 3, 'expect 3 assertions per bad query');
 
-  for (let query of BAD_QUERIES) {
+  for (const query of BAD_QUERIES) {
     const res = await getCalculatorResponse(t, query);
     const calculatorResponse = JSON.parse(res.payload);
     t.equal(res.statusCode, 400, 'response status is 400');
@@ -277,17 +280,17 @@ test('/incentives', async t => {
   t.equal(incentivesResponse.incentives.length, 30);
   t.equal(res.statusCode, 200, 'response status is 200');
 
-  const ajv = new Ajv({
+  const ajv = new Ajv.default({
     schemas: [{ ...API_INCENTIVE_SCHEMA, $id: 'APIIncentive' }],
     coerceTypes: true,
     useDefaults: true,
     removeAdditional: true,
     allErrors: false,
   });
 
-  const validator = ajv.getSchema('APIIncentive');
+  const validator = ajv.getSchema('APIIncentive')!;
 
-  for (var incentive of incentivesResponse.incentives) {
+  for (const incentive of incentivesResponse.incentives) {
     await validator(incentive);
     t.equal(validator.errors, null);
   }
@@ -304,14 +307,14 @@ test('/utilities', async t => {
 
   const utilitiesResponse = JSON.parse(res.payload);
 
-  const ajv = new Ajv({
+  const ajv = new Ajv.default({
     schemas: [API_UTILITIES_RESPONSE_SCHEMA],
     coerceTypes: true,
     useDefaults: true,
     removeAdditional: true,
     allErrors: false,
   });
-  const validator = ajv.getSchema('APIUtilitiesResponse');
+  const validator = ajv.getSchema('APIUtilitiesResponse')!;
   await validator(utilitiesResponse);
   t.equal(validator.errors, null);