feat: migrate api and core to ESM (#733)

* feat: migrate `api` and `core` to ESM

* fix: `httpsnippet-client-api` and `core` exports

* fix: update bin entrypoint

* fix: try rebuilding lockfile

i hate this song

* chore: fix lockfile

* chore: fix type

* fix: yay remove this

* fix: bumping our minimum httpsnippet version to v7

* fix: some linting issues

* chore(deps): bumping oas dependencies

* feat(httpsnippet-client-api): esm compatibility

* feat(core): esm compatibility

* fix: cleaning up how the test-utils package is built

* feat(api): esm compatibility

* fix: linting issues

* fix: unskipping a test that still works fine

* chore: removing unnecessary rootdir configs

* fix: building `api` with just `tsc`

* fix: re-enabling strict mode

---------

Co-authored-by: Jon Ursenbach <[email protected]>

.eslintrc

@@ -1,9 +1,6 @@
 {
-  "extends": ["@readme/eslint-config", "@readme/eslint-config/typescript"],
+  "extends": ["@readme/eslint-config", "@readme/eslint-config/esm", "@readme/eslint-config/typescript"],
   "root": true,
-  "rules": {
-    "unicorn/prefer-node-protocol": "error"
-  },
   "overrides": [
     {
       "files": ["bin/**"],

.gitignore

@@ -1,2 +1,3 @@
 dist/
 node_modules/
+**/*.tsbuildinfo

bin/build-markdown.js

@@ -1,5 +1,5 @@
-const fs = require('node:fs');
-const path = require('node:path');
+import fs from 'node:fs';
+import path from 'node:path';
 
 const readme = fs.readFileSync('README.md', 'utf-8');