lts/lib/internal/repl.js
'use strict';
const {
Number,
NumberIsNaN,
ObjectCreate,
} = primordials;
const REPL = require('repl');
const { kStandaloneREPL } = require('internal/repl/utils');
module.exports = ObjectCreate(REPL);
module.exports.createInternalRepl = createRepl;
function createRepl(env, opts, cb) {
if (typeof opts === 'function') {
cb = opts;
opts = null;
}
opts = {
[kStandaloneREPL]: true,
ignoreUndefined: false,
useGlobal: true,
breakEvalOnSigint: true,
...opts
};
if (parseInt(env.NODE_NO_READLINE)) {
opts.terminal = false;
}
if (env.NODE_REPL_MODE) {
opts.replMode = {
'strict': REPL.REPL_MODE_STRICT,
'sloppy': REPL.REPL_MODE_SLOPPY
}[env.NODE_REPL_MODE.toLowerCase().trim()];
}
if (opts.replMode === undefined) {
opts.replMode = REPL.REPL_MODE_SLOPPY;
}
const historySize = Number(env.NODE_REPL_HISTORY_SIZE);
if (!NumberIsNaN(historySize) && historySize > 0) {
opts.historySize = historySize;
} else {
opts.historySize = 1000;
}
const repl = REPL.start(opts);
const term = 'terminal' in opts ? opts.terminal : process.stdout.isTTY;
repl.setupHistory(term ? env.NODE_REPL_HISTORY : '', cb);
}