commit

2026-09-10 16:58:08 +00:00 · 2025-10-03 15:28:16 +08:00
parent d5c4b04746
commit fcb83bd16b
925 changed files with 165721 additions and 4 deletions
@@ -0,0 +1,106 @@
+
+
+import asTable from 'as-table';
+import ololog from 'ololog';
+import ansicolor from 'ansicolor';
+import ccxt from '../../js/ccxt.js';
+
+const { noLocate } = ololog;
+const log = noLocate;
+
+ansicolor.nice
+
+let printSupportedExchanges = function () {
+    log ('Supported exchanges:', ccxt.exchanges.join (', ').green)
+}
+
+let printUsage = function () {
+    log ('Usage: node', process.argv[1], 'exchange'.green, 'symbol'.yellow, 'depth'.cyan)
+    printSupportedExchanges ()
+}
+
+let printOrderBook = async (id, symbol, depth) => {
+
+    // check if the exchange is supported by ccxt
+    let exchangeFound = ccxt.exchanges.indexOf (id) > -1
+    if (exchangeFound) {
+
+        log ('Instantiating', id.green, 'exchange')
+
+        // instantiate the exchange by id
+        let exchange = new ccxt[id] ()
+
+        // load all markets from the exchange
+        let markets = await exchange.loadMarkets ()
+
+        // output a list of all market symbols
+        // log (id.green, 'has', exchange.symbols.length, 'symbols:', exchange.symbols.join (', ').yellow)
+
+        if (symbol in exchange.markets) {
+
+            const market = exchange.markets[symbol]
+            const pricePrecision = market.precision ? market.precision.price : 8
+            const amountPrecision = market.precision ? market.precision.amount : 8
+
+            // Object.values (markets).forEach (market => log (market))
+
+            // make a table of all markets
+            // const table = asTable.configure ({ delimiter: ' | ' }) (Object.values (markets))
+            // log (table)
+
+            const priceVolumeHelper = color => ([price, amount]) => ({
+                price: price.toFixed (pricePrecision)[color],
+                amount: amount.toFixed (amountPrecision)[color],
+                '  ': '  ',
+            })
+
+            const cursorUp = '\u001b[1A'
+            const tableHeight = depth * 2 + 4 // bids + asks + headers
+
+            log (' ') // empty line
+
+            while (true) {
+
+                const orderbook = await exchange.fetchOrderBook (symbol)
+
+                log (symbol.green, exchange.iso8601 (exchange.milliseconds ()))
+
+                log (asTable.configure ({ delimiter: ' | '.dim, right: true }) ([
+                    ... orderbook.asks.slice (0, depth).reverse ().map (priceVolumeHelper ('red')),
+                    // { price: '--------'.dim, amount: '--------'.dim },
+                    ... orderbook.bids.slice (0, depth).map (priceVolumeHelper ('green')),
+                ]))
+
+                log (cursorUp.repeat (tableHeight))
+            }
+
+        } else {
+
+            log.error ('Symbol', symbol.bright, 'not found')
+        }
+
+
+    } else {
+
+        log ('Exchange ' + id.red + ' not found')
+        printSupportedExchanges ()
+    }
+}
+
+;(async function main () {
+
+    if (process.argv.length > 4) {
+
+        const id = process.argv[2]
+        const symbol = process.argv[3].toUpperCase ()
+        const depth = parseInt (process.argv[4])
+        await printOrderBook (id, symbol, depth)
+
+    } else {
+
+        printUsage ()
+    }
+
+    process.exit ()
+
+}) ()