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'use strict';
const REPL = require('repl');
module.exports = Object.create(REPL);
module.exports.createInternalRepl = createRepl;
function createRepl(env, opts, cb) {
if (typeof opts === 'function') {
cb = opts;
opts = null;
}
opts = {
ignoreUndefined: false,
terminal: process.stdout.isTTY,
useGlobal: true,
breakEvalOnSigint: true,
...opts
};
if (parseInt(env.NODE_NO_READLINE)) {
opts.terminal = false;
}
// The "dumb" special terminal, as defined by terminfo, doesn't support
// ANSI color control codes.
// see http://invisible-island.net/ncurses/terminfo.ti.html#toc-_Specials
if (parseInt(env.NODE_DISABLE_COLORS) || env.TERM === 'dumb') {
opts.useColors = false;
}
opts.replMode = {
'strict': REPL.REPL_MODE_STRICT,
'sloppy': REPL.REPL_MODE_SLOPPY
}[String(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 (!Number.isNaN(historySize) && historySize > 0) {
opts.historySize = historySize;
} else {
opts.historySize = 1000;
}
const repl = REPL.start(opts);
repl.setupHistory(opts.terminal ? env.NODE_REPL_HISTORY : '', cb);
}
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