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'use strict';
const ansiEscapes = require('ansi-escapes');
const cliCursor = require('cli-cursor');
const wrapAnsi = require('wrap-ansi');
const getWidth = stream => {
const columns = stream.columns;
if (!columns) {
return 80;
}
// Windows appears to wrap a character early
// I hate Windows so much
if (process.platform === 'win32') {
return columns - 1;
}
return columns;
};
const main = (stream, options) => {
options = Object.assign({
showCursor: false
}, options);
let prevLineCount = 0;
const render = function () {
if (!options.showCursor) {
cliCursor.hide();
}
let out = [].join.call(arguments, ' ') + '\n';
out = wrapAnsi(out, getWidth(stream), {
trim: false,
hard: true,
wordWrap: false
});
stream.write(ansiEscapes.eraseLines(prevLineCount) + out);
prevLineCount = out.split('\n').length;
};
render.clear = () => {
stream.write(ansiEscapes.eraseLines(prevLineCount));
prevLineCount = 0;
};
render.done = () => {
prevLineCount = 0;
if (!options.showCursor) {
cliCursor.show();
}
};
return render;
};
module.exports = main(process.stdout);
module.exports.stderr = main(process.stderr);
module.exports.create = main;
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