Add better logging system

package-lock.json

@@ -9,6 +9,8 @@
       "version": "1.0.0",
       "dependencies": {
         "commander": "^15.0.0",
+        "pino": "^10.3.1",
+        "pino-pretty": "^13.1.3",
         "puppeteer": "^24.0.0"
       }
     },
@@ -35,6 +37,12 @@
         "node": ">=6.9.0"
       }
     },
+    "node_modules/@pinojs/redact": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/@pinojs/redact/-/redact-0.4.0.tgz",
+      "integrity": "sha512-k2ENnmBugE/rzQfEcdWHcCY+/FM3VLzH9cYEsbdsoqrvzAKRhUZeRNhAZvB8OitQJ1TBed3yqWtdjzS6wJKBwg==",
+      "license": "MIT"
+    },
     "node_modules/@puppeteer/browsers": {
       "version": "2.13.2",
       "resolved": "https://registry.npmjs.org/@puppeteer/browsers/-/browsers-2.13.2.tgz",
@@ -133,6 +141,15 @@
         "node": ">=4"
       }
     },
+    "node_modules/atomic-sleep": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/atomic-sleep/-/atomic-sleep-1.0.0.tgz",
+      "integrity": "sha512-kNOjDqAh7px0XWNI+4QbzoiR/nTkHAWNud2uvnJquD1/x5a7EQZMJT0AczqK0Qn67oY/TTQ1LbUKajZpp3I9tQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=8.0.0"
+      }
+    },
     "node_modules/b4a": {
       "version": "1.8.1",
       "resolved": "https://registry.npmjs.org/b4a/-/b4a-1.8.1.tgz",
@@ -311,6 +328,12 @@
       "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==",
       "license": "MIT"
     },
+    "node_modules/colorette": {
+      "version": "2.0.20",
+      "resolved": "https://registry.npmjs.org/colorette/-/colorette-2.0.20.tgz",
+      "integrity": "sha512-IfEDxwoWIjkeXL1eXcDiow4UbKjhLdq6/EuSVR9GMN7KVH3r9gQ83e73hsz1Nd1T3ijd5xv1wcWRYO+D6kCI2w==",
+      "license": "MIT"
+    },
     "node_modules/commander": {
       "version": "15.0.0",
       "resolved": "https://registry.npmjs.org/commander/-/commander-15.0.0.tgz",
@@ -355,6 +378,15 @@
         "node": ">= 14"
       }
     },
+    "node_modules/dateformat": {
+      "version": "4.6.3",
+      "resolved": "https://registry.npmjs.org/dateformat/-/dateformat-4.6.3.tgz",
+      "integrity": "sha512-2P0p0pFGzHS5EMnhdxQi7aJN+iMheud0UhG4dlE1DLAlvL8JHjJJTX/CSm4JXwV0Ka5nGk3zC5mcb5bUQUxxMA==",
+      "license": "MIT",
+      "engines": {
+        "node": "*"
+      }
+    },
     "node_modules/debug": {
       "version": "4.4.3",
       "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.3.tgz",
@@ -515,12 +547,24 @@
         "@types/yauzl": "^2.9.1"
       }
     },
+    "node_modules/fast-copy": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/fast-copy/-/fast-copy-4.0.3.tgz",
+      "integrity": "sha512-58apWr0GUiDFM8+3afrO6eYwJBn9ZAhDOzG3L+/9llab/haCARS2UIfffmOurYLwbgDRs8n0rfr6qAAPEAuAQw==",
+      "license": "MIT"
+    },
     "node_modules/fast-fifo": {
       "version": "1.3.2",
       "resolved": "https://registry.npmjs.org/fast-fifo/-/fast-fifo-1.3.2.tgz",
       "integrity": "sha512-/d9sfos4yxzpwkDkuN7k2SqFKtYNmCTzgfEpz82x34IM9/zc8KGxQoXg1liNC/izpRM/MBdt44Nmx41ZWqk+FQ==",
       "license": "MIT"
     },
+    "node_modules/fast-safe-stringify": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/fast-safe-stringify/-/fast-safe-stringify-2.1.1.tgz",
+      "integrity": "sha512-W+KJc2dmILlPplD/H4K9l9LcAHAfPtP6BY84uVLXQ6Evcz9Lcg33Y2z1IVblT6xdY54PXYVHEv+0Wpq8Io6zkA==",
+      "license": "MIT"
+    },
     "node_modules/fd-slicer": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/fd-slicer/-/fd-slicer-1.1.0.tgz",
@@ -568,6 +612,12 @@
         "node": ">= 14"
       }
     },
+    "node_modules/help-me": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/help-me/-/help-me-5.0.0.tgz",
+      "integrity": "sha512-7xgomUX6ADmcYzFik0HzAxh/73YlKR9bmFzf51CZwR+b6YtzU2m0u49hQCqV6SvlqIqsaxovfwdvbnsw3b/zpg==",
+      "license": "MIT"
+    },
     "node_modules/http-proxy-agent": {
       "version": "7.0.2",
       "resolved": "https://registry.npmjs.org/http-proxy-agent/-/http-proxy-agent-7.0.2.tgz",
@@ -634,6 +684,15 @@
         "node": ">=8"
       }
     },
+    "node_modules/joycon": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/joycon/-/joycon-3.1.1.tgz",
+      "integrity": "sha512-34wB/Y7MW7bzjKRjUKTa46I2Z7eV62Rkhva+KkopW7Qvv/OSWBqvkSY7vusOPrNuZcUG3tApvdVgNB8POj3SPw==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=10"
+      }
+    },
     "node_modules/js-tokens": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",
@@ -683,6 +742,15 @@
         "node": ">=12"
       }
     },
+    "node_modules/minimist": {
+      "version": "1.2.8",
+      "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.8.tgz",
+      "integrity": "sha512-2yyAR8qBkN3YuheJanUpWC5U3bb5osDywNB8RzDVlDwDHbocAJveqqj1u8+SVD7jkWT4yvsHCpWqqWqAxb0zCA==",
+      "license": "MIT",
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
     "node_modules/mitt": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/mitt/-/mitt-3.0.1.tgz",
@@ -704,6 +772,15 @@
         "node": ">= 0.4.0"
       }
     },
+    "node_modules/on-exit-leak-free": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/on-exit-leak-free/-/on-exit-leak-free-2.1.2.tgz",
+      "integrity": "sha512-0eJJY6hXLGf1udHwfNftBqH+g73EU4B504nZeKpz1sYRKafAghwxEJunB2O7rDZkL4PGfsMVnTXZ2EjibbqcsA==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=14.0.0"
+      }
+    },
     "node_modules/once": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
@@ -787,6 +864,83 @@
       "integrity": "sha512-xceH2snhtb5M9liqDsmEw56le376mTZkEX/jEb/RxNFyegNul7eNslCXP9FDj/Lcu0X8KEyMceP2ntpaHrDEVA==",
       "license": "ISC"
     },
+    "node_modules/pino": {
+      "version": "10.3.1",
+      "resolved": "https://registry.npmjs.org/pino/-/pino-10.3.1.tgz",
+      "integrity": "sha512-r34yH/GlQpKZbU1BvFFqOjhISRo1MNx1tWYsYvmj6KIRHSPMT2+yHOEb1SG6NMvRoHRF0a07kCOox/9yakl1vg==",
+      "license": "MIT",
+      "dependencies": {
+        "@pinojs/redact": "^0.4.0",
+        "atomic-sleep": "^1.0.0",
+        "on-exit-leak-free": "^2.1.0",
+        "pino-abstract-transport": "^3.0.0",
+        "pino-std-serializers": "^7.0.0",
+        "process-warning": "^5.0.0",
+        "quick-format-unescaped": "^4.0.3",
+        "real-require": "^0.2.0",
+        "safe-stable-stringify": "^2.3.1",
+        "sonic-boom": "^4.0.1",
+        "thread-stream": "^4.0.0"
+      },
+      "bin": {
+        "pino": "bin.js"
+      }
+    },
+    "node_modules/pino-abstract-transport": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/pino-abstract-transport/-/pino-abstract-transport-3.0.0.tgz",
+      "integrity": "sha512-wlfUczU+n7Hy/Ha5j9a/gZNy7We5+cXp8YL+X+PG8S0KXxw7n/JXA3c46Y0zQznIJ83URJiwy7Lh56WLokNuxg==",
+      "license": "MIT",
+      "dependencies": {
+        "split2": "^4.0.0"
+      }
+    },
+    "node_modules/pino-pretty": {
+      "version": "13.1.3",
+      "resolved": "https://registry.npmjs.org/pino-pretty/-/pino-pretty-13.1.3.tgz",
+      "integrity": "sha512-ttXRkkOz6WWC95KeY9+xxWL6AtImwbyMHrL1mSwqwW9u+vLp/WIElvHvCSDg0xO/Dzrggz1zv3rN5ovTRVowKg==",
+      "license": "MIT",
+      "dependencies": {
+        "colorette": "^2.0.7",
+        "dateformat": "^4.6.3",
+        "fast-copy": "^4.0.0",
+        "fast-safe-stringify": "^2.1.1",
+        "help-me": "^5.0.0",
+        "joycon": "^3.1.1",
+        "minimist": "^1.2.6",
+        "on-exit-leak-free": "^2.1.0",
+        "pino-abstract-transport": "^3.0.0",
+        "pump": "^3.0.0",
+        "secure-json-parse": "^4.0.0",
+        "sonic-boom": "^4.0.1",
+        "strip-json-comments": "^5.0.2"
+      },
+      "bin": {
+        "pino-pretty": "bin.js"
+      }
+    },
+    "node_modules/pino-std-serializers": {
+      "version": "7.1.0",
+      "resolved": "https://registry.npmjs.org/pino-std-serializers/-/pino-std-serializers-7.1.0.tgz",
+      "integrity": "sha512-BndPH67/JxGExRgiX1dX0w1FvZck5Wa4aal9198SrRhZjH3GxKQUKIBnYJTdj2HDN3UQAS06HlfcSbQj2OHmaw==",
+      "license": "MIT"
+    },
+    "node_modules/process-warning": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/process-warning/-/process-warning-5.0.0.tgz",
+      "integrity": "sha512-a39t9ApHNx2L4+HBnQKqxxHNs1r7KF+Intd8Q/g1bUh6q0WIp9voPXJ/x0j+ZL45KF1pJd9+q2jLIRMfvEshkA==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/fastify"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/fastify"
+        }
+      ],
+      "license": "MIT"
+    },
     "node_modules/progress": {
       "version": "2.0.3",
       "resolved": "https://registry.npmjs.org/progress/-/progress-2.0.3.tgz",
@@ -870,6 +1024,21 @@
         "node": ">=18"
       }
     },
+    "node_modules/quick-format-unescaped": {
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/quick-format-unescaped/-/quick-format-unescaped-4.0.4.tgz",
+      "integrity": "sha512-tYC1Q1hgyRuHgloV/YXs2w15unPVh8qfu/qCTfhTYamaw7fyhumKa2yGpdSo87vY32rIclj+4fWYQXUMs9EHvg==",
+      "license": "MIT"
+    },
+    "node_modules/real-require": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/real-require/-/real-require-0.2.0.tgz",
+      "integrity": "sha512-57frrGM/OCTLqLOAh0mhVA9VBMHd+9U7Zb2THMGdBUoZVOtGbJzjxsYGDJ3A9AYYCP4hn6y1TVbaOfzWtm5GFg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 12.13.0"
+      }
+    },
     "node_modules/require-directory": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/require-directory/-/require-directory-2.1.1.tgz",
@@ -888,6 +1057,31 @@
         "node": ">=4"
       }
     },
+    "node_modules/safe-stable-stringify": {
+      "version": "2.5.0",
+      "resolved": "https://registry.npmjs.org/safe-stable-stringify/-/safe-stable-stringify-2.5.0.tgz",
+      "integrity": "sha512-b3rppTKm9T+PsVCBEOUR46GWI7fdOs00VKZ1+9c1EWDaDMvjQc6tUwuFyIprgGgTcWoVHSKrU8H31ZHA2e0RHA==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/secure-json-parse": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/secure-json-parse/-/secure-json-parse-4.1.0.tgz",
+      "integrity": "sha512-l4KnYfEyqYJxDwlNVyRfO2E4NTHfMKAWdUuA8J0yve2Dz/E/PdBepY03RvyJpssIpRFwJoCD55wA+mEDs6ByWA==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/fastify"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/fastify"
+        }
+      ],
+      "license": "BSD-3-Clause"
+    },
     "node_modules/semver": {
       "version": "7.8.4",
       "resolved": "https://registry.npmjs.org/semver/-/semver-7.8.4.tgz",
@@ -938,6 +1132,15 @@
         "node": ">= 14"
       }
     },
+    "node_modules/sonic-boom": {
+      "version": "4.2.1",
+      "resolved": "https://registry.npmjs.org/sonic-boom/-/sonic-boom-4.2.1.tgz",
+      "integrity": "sha512-w6AxtubXa2wTXAUsZMMWERrsIRAdrK0Sc+FUytWvYAhBJLyuI4llrMIC1DtlNSdI99EI86KZum2MMq3EAZlF9Q==",
+      "license": "MIT",
+      "dependencies": {
+        "atomic-sleep": "^1.0.0"
+      }
+    },
     "node_modules/source-map": {
       "version": "0.6.1",
       "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
@@ -948,6 +1151,15 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/split2": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/split2/-/split2-4.2.0.tgz",
+      "integrity": "sha512-UcjcJOWknrNkF6PLX83qcHM6KHgVKNkV62Y8a5uYDVv9ydGQVwAHMKqHdJje1VTWpljG0WYpCDhrCdAOYH4TWg==",
+      "license": "ISC",
+      "engines": {
+        "node": ">= 10.x"
+      }
+    },
     "node_modules/streamx": {
       "version": "2.28.0",
       "resolved": "https://registry.npmjs.org/streamx/-/streamx-2.28.0.tgz",
@@ -985,6 +1197,18 @@
         "node": ">=8"
       }
     },
+    "node_modules/strip-json-comments": {
+      "version": "5.0.3",
+      "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-5.0.3.tgz",
+      "integrity": "sha512-1tB5mhVo7U+ETBKNf92xT4hrQa3pm0MZ0PQvuDnWgAAGHDsfp4lPSpiS6psrSiet87wyGPh9ft6wmhOMQ0hDiw==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=14.16"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/tar-fs": {
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/tar-fs/-/tar-fs-3.1.2.tgz",
@@ -1029,6 +1253,24 @@
         "b4a": "^1.6.4"
       }
     },
+    "node_modules/thread-stream": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/thread-stream/-/thread-stream-4.2.0.tgz",
+      "integrity": "sha512-e2zZ96wSChazBsbENf/Pcm/4swHt2cEKQ92rhUjkL9GCKiTDJIaTBenjE/m9DXi0QBmTMDkFDdOomUy20A1tDQ==",
+      "license": "MIT",
+      "dependencies": {
+        "real-require": "^1.0.0"
+      },
+      "engines": {
+        "node": ">=20"
+      }
+    },
+    "node_modules/thread-stream/node_modules/real-require": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/real-require/-/real-require-1.0.0.tgz",
+      "integrity": "sha512-P4nbQYQfePJxRSmY+v/KINxVucm4NF3p3s7pJveMTtom52FR4YGltUQLB8idDXwDDWW+eYrWDFbuzUnjoWHF7g==",
+      "license": "MIT"
+    },
     "node_modules/tslib": {
       "version": "2.8.1",
       "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.8.1.tgz",

package.json

@@ -10,11 +10,20 @@
     "test": "node src/test/test.js"
   },
   "standard": {
-    "globals": ["chrome", "Readability", "indexedDB", "getComputedStyle"],
+    "globals": [
-    "ignore": ["extension/"]
+      "chrome",
+      "Readability",
+      "indexedDB",
+      "getComputedStyle"
+    ],
+    "ignore": [
+      "extension/"
+    ]
   },
   "dependencies": {
     "commander": "^15.0.0",
+    "pino": "^10.3.1",
+    "pino-pretty": "^13.1.3",
     "puppeteer": "^24.0.0"
   }
 }

src/browser.js

@@ -1,6 +1,7 @@
 import fs from 'node:fs'
 import path from 'node:path'
 import puppeteer from 'puppeteer'
+import logger from './logger.js'
 
 const EXTENSION_DIR = path.resolve('./extension/reader-view')
 const MANIFEST_PATH = path.join(EXTENSION_DIR, 'manifest.json')
@@ -8,7 +9,7 @@ const READABILITY_PATH = path.join(EXTENSION_DIR, 'data/inject/Readability.js')
 
 export function checkExtension () {
   if (!fs.existsSync(MANIFEST_PATH)) {
-    console.error(
+    logger.error(
       `Extension not found at: ${EXTENSION_DIR}\n` +
         'Please extract the extension first:\n' +
         '  mkdir -p extension/reader-view\n' +
@@ -17,7 +18,7 @@ export function checkExtension () {
     process.exit(1)
   }
   if (!fs.existsSync(READABILITY_PATH)) {
-    console.error(
+    logger.error(
       `Readability.js not found at: ${READABILITY_PATH}\n` +
         'The extension may be incomplete. Please re-extract it.'
     )
@@ -34,7 +35,7 @@ export function getExtensionDir () {
 }
 
 export async function launchBrowser () {
-  console.log(`Launching browser with extension: ${EXTENSION_DIR}`)
+  logger.debug(`Launching browser with extension: ${EXTENSION_DIR}`)
   const browser = await puppeteer.launch({
     headless: true,
     ignoreDefaultArgs: [
@@ -67,6 +68,6 @@ export async function discoverExtensionId (browser) {
   if (!extId) {
     throw new Error('Could not discover Reader View extension ID')
   }
-  console.log(`Discovered extension ID: ${extId}`)
+  logger.debug(`Discovered extension ID: ${extId}`)
   return extId
 }

src/cli.js

@@ -27,6 +27,10 @@ program
     '-o, --output <path>',
     'output file path (default: ./output/<title>.pdf)'
   )
+  .option(
+    '-l, --log-level <level>',
+    'logging level (fatal, error, warn, info, debug)'
+  )
   .addHelpText(
     'after',
     `

src/config.js

@@ -1,12 +1,13 @@
 import fs from 'node:fs'
 import path from 'node:path'
+import logger from './logger.js'
 
 export function loadPreferences (prefsPath) {
   if (!prefsPath || !fs.existsSync(prefsPath)) return {}
   try {
     return JSON.parse(fs.readFileSync(prefsPath, 'utf-8'))
   } catch (e) {
-    console.warn(`Warning: could not parse preferences file: ${prefsPath}`)
+    logger.warn(`Warning: could not parse preferences file: ${prefsPath}`)
     return {}
   }
 }

src/index.js

@@ -2,6 +2,7 @@ import process from 'node:process'
 import path from 'node:path'
 import { parseArgs, VALID_THEMES } from './cli.js'
 import { loadPreferences, readCustomCss } from './config.js'
+import logger from './logger.js'
 import {
   checkExtension,
   launchBrowser,
@@ -37,20 +38,20 @@ async function main () {
 
   const theme = opts.theme || preferences.mode || 'light'
   if (!VALID_THEMES.includes(theme)) {
-    console.error(
+    logger.error(
       `Invalid theme "${theme}". Valid themes: ${VALID_THEMES.join(', ')}`
     )
     process.exit(1)
   }
   preferences.mode = theme
-  console.log(`Theme: ${theme}`)
+  logger.info(`Theme: ${theme}`)
 
   let customCss = null
   if (opts.css) {
     customCss = readCustomCss(path.resolve(opts.css))
     if (customCss !== null) {
       preferences['user-css'] = customCss
-      console.log(`Custom CSS loaded: ${path.resolve(opts.css)}`)
+      logger.info(`Custom CSS loaded: ${path.resolve(opts.css)}`)
     }
   }
 
@@ -59,7 +60,7 @@ async function main () {
   try {
     const extId = await discoverExtensionId(browser)
 
-    console.log(`Fetching article: ${url}`)
+    logger.info(`Fetching article: ${url}`)
     const articlePage = await browser.newPage()
     await articlePage.goto(url, { waitUntil: 'networkidle0', timeout: 30000 })
     const article = await extractArticle(articlePage, getReadabilityPath())
@@ -83,7 +84,7 @@ async function main () {
       '?id=1',
       `&url=${encodeURIComponent(url)}`
     ].join('')
-    console.log(`Opening Reader View: ${readerUrl}`)
+    logger.debug(`Opening Reader View: ${readerUrl}`)
 
     const readerPage = await browser.newPage()
     await readerPage.goto(readerUrl, { waitUntil: 'load', timeout: 30000 })
@@ -109,11 +110,11 @@ async function main () {
     await pdfPage.close()
   } finally {
     await browser.close()
-    console.log('Browser closed.')
+    logger.info('Browser closed.')
   }
 }
 
 main().catch((err) => {
-  console.error('Fatal error:', err)
+  logger.error(err)
   process.exit(1)
 })

src/logger.js

@@ -0,0 +1,22 @@
+import pino from 'pino'
+
+function resolveLevel () {
+  if (process.env.LOG_LEVEL) return process.env.LOG_LEVEL
+  const idx = process.argv.indexOf('--log-level')
+  if (idx !== -1 && process.argv[idx + 1]) return process.argv[idx + 1]
+  return 'info'
+}
+
+const logger = pino({
+  level: resolveLevel(),
+  transport: {
+    target: 'pino-pretty',
+    options: {
+      colorize: true,
+      translateTime: 'HH:MM:ss',
+      ignore: 'pid,hostname'
+    }
+  }
+})
+
+export default logger

src/pdf.js

@@ -1,10 +1,11 @@
 import fs from 'node:fs'
 import path from 'node:path'
+import logger from './logger.js'
 
 const HIGHLIGHT_CSS =
   '<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.11.1/styles/default.min.css">'
 const HIGHLIGHT_JS =
-  '<script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.11.1/highlight.min.js"><script><script>hljs.highlightAll();<script>'
+  '<script src="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.11.1/highlight.min.js"><\/script><script>hljs.highlightAll();<\/script>'
 
 export function getOutputFilename (title, outputDir) {
   const safe = title
@@ -42,7 +43,7 @@ export function enhanceHtml (html, customCss) {
 
 export async function generatePdf (page, html, outputPath) {
   await page.setContent(html, { waitUntil: 'networkidle0' })
-  console.log(`Generating PDF: ${outputPath}`)
+  logger.info(`Generating PDF: ${outputPath}`)
   await page.pdf({
     path: outputPath,
     format: 'A4',
@@ -54,5 +55,5 @@ export async function generatePdf (page, html, outputPath) {
       right: '0mm'
     }
   })
-  console.log(`PDF saved: ${outputPath}`)
+  logger.info(`PDF saved: ${outputPath}`)
 }

src/reader.js

@@ -1,4 +1,5 @@
 import fs from 'node:fs'
+import logger from './logger.js'
 
 export async function extractArticle (page, readabilityPath) {
   const readabilitySource = fs.readFileSync(readabilityPath, 'utf-8')
@@ -51,7 +52,7 @@ export async function extractArticle (page, readabilityPath) {
   if (!article) {
     throw new Error('Failed to extract article content with Readability')
   }
-  console.log(
+  logger.info(
     `Extracted article: ${article.title} (${article.length} chars, reading ${article.readingTimeMinsFast}-${article.readingTimeMinsSlow} min` +
       (article.published_time ? `, ${article.published_time}` : '') +
       ')'
@@ -90,7 +91,7 @@ export async function storeArticle (extPage, extId, articleId, article) {
     },
     { id: articleId, article }
   )
-  console.log('Article stored in extension IndexedDB')
+  logger.debug('Article stored in extension IndexedDB')
 }
 
 export async function setExtensionPreferences (page, extId, prefs) {
@@ -105,11 +106,11 @@ export async function setExtensionPreferences (page, extId, prefs) {
       })
     })
   }, prefs)
-  console.log(`Extension preferences set: ${Object.keys(prefs).length} key(s)`)
+  logger.debug(`Extension preferences set: ${Object.keys(prefs).length} key(s)`)
 }
 
 export async function waitForReaderView (page) {
-  console.log('Waiting for Reader View to render article...')
+  logger.debug('Waiting for Reader View to render article...')
   await page.waitForFunction(
     () => {
       const title = document.title
@@ -126,7 +127,7 @@ export async function waitForReaderView (page) {
     },
     { timeout: 60000 }
   )
-  console.log('Article rendered.')
+  logger.info('Article rendered.')
 }
 
 export async function extractRenderedContent (page, baseUrl) {