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index.ts
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index.ts
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#!/usr/bin/env node
import yargs from "yargs/yargs";
import { ChildProcess, spawn } from "child_process";
import _locreq from "locreq";
import { hasShape, is } from "@sealcode/ts-predicates";
import { cwd } from "node:process";
const locreq = _locreq(cwd());
import { PackageJsonShape, TmuxScriptsPredicate } from "./types/PackageJson";
const defaultCommandLineDesignOptions =
"tmux select-layout even-horizontal && tmux set -g pane-border-status top && tmux set -g mouse on && tmux attach";
const parser = yargs(process.argv.slice(2)).options({
p: {
alias: "scriptKey",
describe: "Name of the script key",
type: "string",
},
});
function consoleChildProcessError(child: ChildProcess) {
child.on("error", (err) => {
console.error(`There is an error ${err.message}`);
});
}
function getFinalCommand(commands: string[]) {
const tmuxCommand = commands
.map((script, index) => {
const command = index === 0 ? "new-session" : "split-window";
const windowTitle = script.split(" ")[2];
const setTitle = `printf '\\033]2;%s\\033\\' '${windowTitle}'`;
return `tmux ${command} -d "${setTitle} && ${script}"`;
})
.join(" && ");
const finalCommand = `${tmuxCommand} && ${defaultCommandLineDesignOptions}`;
return finalCommand;
}
function getChild(finalCommand: string) {
return spawn(finalCommand, {
shell: true,
stdio: "inherit",
});
}
async function main() {
const argv = await parser.argv;
if (Object.keys(argv).length === 2 && !argv._.length) {
console.error("No script key or custom scripts provided");
process.exit(0);
}
if (argv.scriptKey) {
if (argv._.length > 0) {
console.error("No additional arguments are allowed when using -p.");
process.exit(1);
}
const packageJsonData: unknown = locreq("package.json") as unknown;
const scriptKey = argv.scriptKey as string;
if (!hasShape(PackageJsonShape, packageJsonData)) {
throw new Error(
"The package.json does not have the expected tmux-scripts."
);
}
const tmuxScripts: Record<string, string[]> =
packageJsonData["tmux-scripts"];
if (!is(tmuxScripts, TmuxScriptsPredicate)) {
throw new Error(
"The object tmux-scripts does not have the expected shape."
);
}
if (!tmuxScripts[scriptKey]) {
console.error(
`Script with key '${scriptKey}' not found in tmux-scripts`
);
process.exit(0);
}
console.log(`Running script with key: ${scriptKey}`);
const commands = tmuxScripts[scriptKey];
const finalCommand = getFinalCommand(commands);
const child = getChild(finalCommand);
consoleChildProcessError(child);
} else if (argv._.length > 0) {
const commands = argv._ as string[];
console.log(`Running custom scripts: ${commands.join(", ")}`);
const finalCommand = getFinalCommand(commands);
const child = getChild(finalCommand);
consoleChildProcessError(child);
}
}
void main().catch((error) => {
console.error(`An error occurred: ${error}`);
process.exit(1);
});

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