69 lines
1.7 KiB
JavaScript
69 lines
1.7 KiB
JavaScript
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import process from 'node:process';
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import ansiEscapes from 'ansi-escapes';
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import cliCursor from 'cli-cursor';
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import wrapAnsi from 'wrap-ansi';
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import sliceAnsi from 'slice-ansi';
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import stripAnsi from 'strip-ansi';
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const defaultTerminalHeight = 24;
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const getWidth = ({columns = 80}) => columns;
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const fitToTerminalHeight = (stream, text) => {
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const terminalHeight = stream.rows ?? defaultTerminalHeight;
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const lines = text.split('\n');
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const toRemove = Math.max(0, lines.length - terminalHeight);
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return toRemove ? sliceAnsi(text, stripAnsi(lines.slice(0, toRemove).join('\n')).length + 1) : text;
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};
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export function createLogUpdate(stream, {showCursor = false} = {}) {
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let previousLineCount = 0;
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let previousWidth = getWidth(stream);
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let previousOutput = '';
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const reset = () => {
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previousOutput = '';
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previousWidth = getWidth(stream);
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previousLineCount = 0;
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};
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const render = (...arguments_) => {
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if (!showCursor) {
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cliCursor.hide();
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}
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let output = fitToTerminalHeight(stream, arguments_.join(' ') + '\n');
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const width = getWidth(stream);
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if (output === previousOutput && previousWidth === width) {
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return;
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}
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previousOutput = output;
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previousWidth = width;
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output = wrapAnsi(output, width, {trim: false, hard: true, wordWrap: false});
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stream.write(ansiEscapes.eraseLines(previousLineCount) + output);
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previousLineCount = output.split('\n').length;
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};
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render.clear = () => {
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stream.write(ansiEscapes.eraseLines(previousLineCount));
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reset();
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};
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render.done = () => {
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reset();
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if (!showCursor) {
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cliCursor.show();
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}
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};
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return render;
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}
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const logUpdate = createLogUpdate(process.stdout);
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export default logUpdate;
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export const logUpdateStderr = createLogUpdate(process.stderr);
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