ethers.js/misc/admin/src.ts/log.ts

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// See: https://stackoverflow.com/questions/9781218/how-to-change-node-jss-console-font-color
let disableColor = !(process.stdout.isTTY);
export function getProgressBar(action: string): (percent: number) => void {
let lastProgress = -1;
return function(percent: number): void {
const progress = Math.trunc(percent * 100);
if (disableColor) {
if (lastProgress === -1) {
console.log(action + "...");
}
lastProgress = progress;
return;
}
//process.stdin.setRawMode(false);
//process.stdin.pause();
if (progress === lastProgress || lastProgress === 1) { return; }
lastProgress = progress;
(<any>(process.stdout)).clearLine();
(<any>(process.stdout)).cursorTo(0);
process.stdout.write(action + "... " + progress + "%");
if (percent === 1) {
process.stdout.write('\n');
}
}
}
const colorSequences: Record<string, string> = {
blue: "\x1b[34m",
cyan: "\x1b[36m",
green: "\x1b[32m",
magenta: "\x1b[35m",
red: "\x1b[31m",
yellow: "\x1b[33m",
bold: ""
};
function getColor(color?: string): string {
if (!color || color === "normal") { return "\x1b[0m"; }
return "\x1b[1m" + colorSequences[color];
}
export type ColorifyFunc = (text: string) => string;
function _colorify(format: string): ColorifyFunc {
return function (text: string): string {
if (disableColor) { return text; }
return getColor(format) + text.replace(/[^ -~]+/g, "") + getColor();
}
}
export const colorify: { [ format: string ]: ColorifyFunc } = Object.freeze({
bold: _colorify("bold"),
blue: _colorify("blue"),
green: _colorify("green"),
red: _colorify("red"),
});