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- 'use strict';
- const chalk = require('chalk');
- const cliCursor = require('cli-cursor');
- const cliSpinners = require('cli-spinners');
- const logSymbols = require('log-symbols');
- const stripAnsi = require('strip-ansi');
- const wcwidth = require('wcwidth');
- const TEXT = Symbol('text');
- class Ora {
- constructor(options) {
- if (typeof options === 'string') {
- options = {
- text: options
- };
- }
- this.options = Object.assign({
- text: '',
- color: 'cyan',
- stream: process.stderr
- }, options);
- const sp = this.options.spinner;
- this.spinner = typeof sp === 'object' ? sp : (process.platform === 'win32' ? cliSpinners.line : (cliSpinners[sp] || cliSpinners.dots)); // eslint-disable-line no-nested-ternary
- if (this.spinner.frames === undefined) {
- throw new Error('Spinner must define `frames`');
- }
- this.color = this.options.color;
- this.hideCursor = this.options.hideCursor !== false;
- this.interval = this.options.interval || this.spinner.interval || 100;
- this.stream = this.options.stream;
- this.id = null;
- this.frameIndex = 0;
- this.isEnabled = typeof this.options.isEnabled === 'boolean' ? this.options.isEnabled : ((this.stream && this.stream.isTTY) && !process.env.CI);
- // Set *after* `this.stream`
- this.text = this.options.text;
- this.linesToClear = 0;
- }
- get text() {
- return this[TEXT];
- }
- get isSpinning() {
- return this.id !== null;
- }
- set text(value) {
- this[TEXT] = value;
- const columns = this.stream.columns || 80;
- this.lineCount = stripAnsi('--' + value).split('\n').reduce((count, line) => {
- return count + Math.max(1, Math.ceil(wcwidth(line) / columns));
- }, 0);
- }
- frame() {
- const {frames} = this.spinner;
- let frame = frames[this.frameIndex];
- if (this.color) {
- frame = chalk[this.color](frame);
- }
- this.frameIndex = ++this.frameIndex % frames.length;
- return frame + ' ' + this.text;
- }
- clear() {
- if (!this.isEnabled || !this.stream.isTTY) {
- return this;
- }
- for (let i = 0; i < this.linesToClear; i++) {
- if (i > 0) {
- this.stream.moveCursor(0, -1);
- }
- this.stream.clearLine();
- this.stream.cursorTo(0);
- }
- this.linesToClear = 0;
- return this;
- }
- render() {
- this.clear();
- this.stream.write(this.frame());
- this.linesToClear = this.lineCount;
- return this;
- }
- start(text) {
- if (text) {
- this.text = text;
- }
- if (!this.isEnabled) {
- this.stream.write(`- ${this.text}\n`);
- return this;
- }
- if (this.isSpinning) {
- return this;
- }
- if (this.hideCursor) {
- cliCursor.hide(this.stream);
- }
- this.render();
- this.id = setInterval(this.render.bind(this), this.interval);
- return this;
- }
- stop() {
- if (!this.isEnabled) {
- return this;
- }
- clearInterval(this.id);
- this.id = null;
- this.frameIndex = 0;
- this.clear();
- if (this.hideCursor) {
- cliCursor.show(this.stream);
- }
- return this;
- }
- succeed(text) {
- return this.stopAndPersist({symbol: logSymbols.success, text});
- }
- fail(text) {
- return this.stopAndPersist({symbol: logSymbols.error, text});
- }
- warn(text) {
- return this.stopAndPersist({symbol: logSymbols.warning, text});
- }
- info(text) {
- return this.stopAndPersist({symbol: logSymbols.info, text});
- }
- stopAndPersist(options = {}) {
- this.stop();
- this.stream.write(`${options.symbol || ' '} ${options.text || this.text}\n`);
- return this;
- }
- }
- module.exports = function (opts) {
- return new Ora(opts);
- };
- module.exports.promise = (action, options) => {
- if (typeof action.then !== 'function') {
- throw new TypeError('Parameter `action` must be a Promise');
- }
- const spinner = new Ora(options);
- spinner.start();
- action.then(
- () => {
- spinner.succeed();
- },
- () => {
- spinner.fail();
- }
- );
- return spinner;
- };
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