calebboyd
66 lines
1.5 KiB
TypeScript
66 lines
1.5 KiB
TypeScript
import colors = require('chalk')
|
|
import ora = require('ora')
|
|
|
|
const frameLength = 120
|
|
|
|
export interface LogStep {
|
|
modify(text: string, color?: string): void
|
|
log(text: string, color?: string): void
|
|
}
|
|
|
|
export class Logger {
|
|
private verbose: boolean
|
|
private silent: boolean
|
|
private ora: any
|
|
private modify: Function
|
|
public write: (text: string, color?: string) => void
|
|
|
|
constructor(level: 'verbose' | 'silent' | 'info') {
|
|
this.verbose = level === 'verbose'
|
|
this.silent = level === 'silent'
|
|
if (!this.silent) {
|
|
this.ora = ora({
|
|
text: 'Starting...',
|
|
color: 'blue',
|
|
spinner: 'dots'
|
|
})
|
|
this.ora.stop()
|
|
}
|
|
const noop = () => {}
|
|
this.modify = this.silent ? noop : this._modify.bind(this)
|
|
this.write = this.silent ? noop : this._write.bind(this)
|
|
}
|
|
|
|
flush() {
|
|
!this.silent && this.ora.succeed()
|
|
return new Promise(resolve => setTimeout(resolve, frameLength))
|
|
}
|
|
|
|
_write(update: string, color = 'green') {
|
|
this.ora.succeed().text = (colors as any)[color](update)
|
|
this.ora.start()
|
|
}
|
|
|
|
_modify(update: string, color = this.ora.color) {
|
|
this.ora.text = update
|
|
this.ora.color = color
|
|
}
|
|
|
|
step(text: string): LogStep {
|
|
if (this.silent) {
|
|
return { modify() {}, log() {} }
|
|
}
|
|
if (!this.ora.id) {
|
|
this.ora.start().text = text
|
|
} else {
|
|
this.ora.succeed().text = text
|
|
this.ora.start()
|
|
}
|
|
|
|
return {
|
|
modify: this.modify,
|
|
log: this.verbose ? this.write : this.modify
|
|
} as LogStep
|
|
}
|
|
}
|