implement lib

src/types.ts

@@ -0,0 +1,59 @@
+import { Chalk } from 'chalk'
+
+export type Options = {
+    format: string,
+}
+
+export enum Level {
+    DEBUG = 0,
+    TRACE = 1,
+    INFO = 2,
+    WARNING = 3,
+    ERROR = 4,
+}
+
+export enum LevelFilter {
+    DEBUG = 0,
+    TRACE = 1,
+    INFO = 2,
+    WARNING = 3,
+    ERROR = 4,
+    OFF = 6,
+}
+
+export type WriterOptions = {
+    minLevel: Level,
+    with_color: boolean,
+    [key: string | number | symbol]: any,
+}
+
+export function level_to_string(level: Level, with_color: boolean) : string {
+    const str = get_string(level)
+
+    if (!with_color) return str
+
+    const color = get_color(level)
+    return color(str)
+}
+
+function get_string(level: Level) : string {
+    switch (level) {
+        case Level.DEBUG: return "DEBUG  "
+        case Level.TRACE: return "TRACE  "
+        case Level.INFO: return "INFO   "
+        case Level.WARNING: return "WARNING"
+        case Level.ERROR: return "ERROR  "
+    }
+}
+
+const chalk = new Chalk({ level: 2 }) // 256 colors
+
+function get_color(level: Level) {
+    switch (level) {
+        case Level.DEBUG: return chalk.blueBright
+        case Level.TRACE: return chalk.green
+        case Level.INFO: return (str: string) => str
+        case Level.WARNING: return chalk.hex('#FFA500')
+        case Level.ERROR: return chalk.red
+    }
+}