Makefile: GOESBUIILD changes

doesn't ever install it if it's already present. Also moved it to
optional dependencies in package.json.

package-lock.json

@@ -15,7 +15,6 @@
         "any-date-parser": "^1.5.4",
         "browserslist": "^4.21.7",
         "cheerio": "^1.0.0-rc.12",
-        "esbuild": "^0.18.6",
         "fs-cheerio": "^3.0.0",
         "inline-source": "^8.0.2",
         "jsdom": "^22.1.0",
@@ -32,6 +31,9 @@
       },
       "devDependencies": {
         "live-server": "^1.2.2"
+      },
+      "optionalDependencies": {
+        "esbuild": "^0.18.6"
       }
     },
     "node_modules/@alloc/quick-lru": {
@@ -1651,6 +1653,7 @@
       "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.18.6.tgz",
       "integrity": "sha512-5QgxWaAhU/tPBpvkxUmnFv2YINHuZzjbk0LeUUnC2i3aJHjfi5yR49lgKgF7cb98bclOp/kans8M5TGbGFfJlQ==",
       "hasInstallScript": true,
+      "optional": true,
       "bin": {
         "esbuild": "bin/esbuild"
       },
@@ -7899,6 +7902,7 @@
       "version": "0.18.6",
       "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.18.6.tgz",
       "integrity": "sha512-5QgxWaAhU/tPBpvkxUmnFv2YINHuZzjbk0LeUUnC2i3aJHjfi5yR49lgKgF7cb98bclOp/kans8M5TGbGFfJlQ==",
+      "optional": true,
       "requires": {
         "@esbuild/android-arm": "0.18.6",
         "@esbuild/android-arm64": "0.18.6",