fix: postinstall script to build client lib if needed, add readme

client/README.md

@@ -0,0 +1,9 @@
+# @stacks/blockchain-api-client
+[![NPM Package](https://img.shields.io/npm/v/@stacks/blockchain-api-client.svg?style=flat-square)](https://www.npmjs.org/package/@stacks/blockchain-api-client)
+[![Build Status](https://github.com/blockstack/stacks-blockchain-api/workflows/Build/badge.svg)](https://github.com/blockstack/stacks-blockchain-api/actions)
+
+Client for the Stacks Blockchain API.
+
+### Known Issues
+
+* The TypeScript definitions for several objects involving type unions, including transactions, are incorrectly specified as only `object`.

client/package.json

@@ -2,11 +2,22 @@
   "name": "@stacks/blockchain-api-client",
   "version": "0.1.0",
   "access": "public",
-  "description": "TypeScript client for the Stacks Blockchain API",
+  "description": "Client for the Stacks Blockchain API",
+  "homepage": "https://github.com/blockstack/stacks-blockchain-api/tree/master/client#readme",
+  "author": "Blockstack PBC <engineering@blockstack.com> (https://blockstack.org)",
+  "license": "GPL-3.0",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/blockstack/stacks-blockchain-api.git"
+  },
+  "bugs": {
+    "url": "https://github.com/blockstack/stacks-blockchain-api/issues"
+  },
   "main": "lib/index.js",
   "unpkg": "lib/index.umd.js",
   "scripts": {
     "prepublishOnly": "npm run build",
+    "postinstall": "npx shx find lib/index.js || npm run build",
     "build": "rimraf ./lib && npm run generate-openapi && npm run build:node && npm run build:browser",
     "build:node": "tsc",
     "build:browser": "microbundle -i src/index.ts -o lib/index.umd.js --no-pkg-main -f umd --external none --globals none --tsconfig tsconfig.browser.json --name StacksBlockchainApiClient",
@@ -15,8 +26,6 @@
     "prep-openapi": "rimraf ./.tmp && swagger-cli bundle --dereference -o ./.tmp/openapi.json ../docs/openapi.yaml && shx sed -i '^.*\\$schema.*$' '' ./.tmp/openapi.json",
     "generate-openapi": "npm run prep-openapi && openapi-generator generate --skip-validate-spec -g typescript-fetch --additional-properties=typescriptThreePlus=true,supportsES6=true,legacyDiscriminatorBehavior=false,enumPropertyNaming=original,modelPropertyNaming=original -i ./.tmp/openapi.json -o ./src/generated"
   },
-  "author": "@blockstack",
-  "license": "ISC",
   "prettier": "@blockstack/prettier-config",
   "files": [
     "./src",

client/tsconfig.json

@@ -1,6 +1,6 @@
 {
   "compilerOptions": {
-    "target": "es2019",
+    "target": "es2017",
     "module": "commonjs",
     "moduleResolution": "node",
     "declaration": true,