implemented frontend including separate message system; started to implement backend

yjs-poll/node_modules/lib0/logging.common.js

@@ -0,0 +1,105 @@
+import * as symbol from './symbol.js'
+import * as time from './time.js'
+import * as env from './environment.js'
+import * as func from './function.js'
+import * as json from './json.js'
+
+export const BOLD = symbol.create()
+export const UNBOLD = symbol.create()
+export const BLUE = symbol.create()
+export const GREY = symbol.create()
+export const GREEN = symbol.create()
+export const RED = symbol.create()
+export const PURPLE = symbol.create()
+export const ORANGE = symbol.create()
+export const UNCOLOR = symbol.create()
+
+/* c8 ignore start */
+/**
+ * @param {Array<undefined|string|Symbol|Object|number|function():any>} args
+ * @return {Array<string|object|number|undefined>}
+ */
+export const computeNoColorLoggingArgs = args => {
+  if (args.length === 1 && args[0]?.constructor === Function) {
+    args = /** @type {Array<string|Symbol|Object|number>} */ (/** @type {[function]} */ (args)[0]())
+  }
+  const strBuilder = []
+  const logArgs = []
+  // try with formatting until we find something unsupported
+  let i = 0
+  for (; i < args.length; i++) {
+    const arg = args[i]
+    if (arg === undefined) {
+      break
+    } else if (arg.constructor === String || arg.constructor === Number) {
+      strBuilder.push(arg)
+    } else if (arg.constructor === Object) {
+      break
+    }
+  }
+  if (i > 0) {
+    // create logArgs with what we have so far
+    logArgs.push(strBuilder.join(''))
+  }
+  // append the rest
+  for (; i < args.length; i++) {
+    const arg = args[i]
+    if (!(arg instanceof Symbol)) {
+      logArgs.push(arg)
+    }
+  }
+  return logArgs
+}
+/* c8 ignore stop */
+
+const loggingColors = [GREEN, PURPLE, ORANGE, BLUE]
+let nextColor = 0
+let lastLoggingTime = time.getUnixTime()
+
+/* c8 ignore start */
+/**
+ * @param {function(...any):void} _print
+ * @param {string} moduleName
+ * @return {function(...any):void}
+ */
+export const createModuleLogger = (_print, moduleName) => {
+  const color = loggingColors[nextColor]
+  const debugRegexVar = env.getVariable('log')
+  const doLogging = debugRegexVar !== null &&
+    (debugRegexVar === '*' || debugRegexVar === 'true' ||
+      new RegExp(debugRegexVar, 'gi').test(moduleName))
+  nextColor = (nextColor + 1) % loggingColors.length
+  moduleName += ': '
+  return !doLogging
+    ? func.nop
+    : (...args) => {
+        if (args.length === 1 && args[0]?.constructor === Function) {
+          args = args[0]()
+        }
+        const timeNow = time.getUnixTime()
+        const timeDiff = timeNow - lastLoggingTime
+        lastLoggingTime = timeNow
+        _print(
+          color,
+          moduleName,
+          UNCOLOR,
+          ...args.map((arg) => {
+            if (arg != null && arg.constructor === Uint8Array) {
+              arg = Array.from(arg)
+            }
+            const t = typeof arg
+            switch (t) {
+              case 'string':
+              case 'symbol':
+                return arg
+              default: {
+                return json.stringify(arg)
+              }
+            }
+          }),
+          color,
+          ' +' + timeDiff + 'ms'
+        )
+      }
+}
+/* c8 ignore stop */