test: set --no-esm tap flag

Author: isaacs

package.json

@@ -288,8 +288,8 @@
     "prepare": "node bin/npm-cli.js rebuild && node bin/npm-cli.js --no-audit --no-timing prune --prefix=. --no-global && rimraf test/*/*/node_modules && make -j4 doc",
     "preversion": "bash scripts/update-authors.sh && git add AUTHORS && git commit -m \"update AUTHORS\" || true",
     "licenses": "licensee --production --errors-only",
-    "tap": "tap -J --timeout 300",
-    "tap-cover": "tap -J --nyc-arg=--cache --coverage --timeout 600",
+    "tap": "tap -J --timeout 300 --no-esm",
+    "tap-cover": "tap -J --nyc-arg=--cache --coverage --timeout 600 --no-esm",
     "pretest": "standard",
     "test": "npm run test-tap --",
     "sudotest": "sudo npm run tap -- \"test/tap/*.js\"",