commit

docs/ccxt/examples/js/live-ticker.js

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+
+
+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, '[rateLimit]'.magenta)
+    printSupportedExchanges ()
+}
+
+let printTicker = async (id, symbol, rateLimit = undefined) => {
+
+    // 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] ()
+
+        exchange.rateLimit = rateLimit ? rateLimit : exchange.rateLimit
+
+        log.green ('Rate limit:', exchange.rateLimit.toString ().bright)
+
+        // load all markets from the exchange
+        let markets = await exchange.loadMarkets ()
+
+        if (symbol in exchange.markets) {
+
+            while (true) {
+
+                const ticker = await exchange.fetchTicker (symbol)
+
+                log ('--------------------------------------------------------')
+                log (exchange.id.green, symbol.yellow, exchange.iso8601 (exchange.milliseconds ()))
+                log (ccxt.omit (ticker, 'info'))
+            }
+
+        } else {
+
+            log.error ('Symbol', symbol.bright, 'not found')
+        }
+
+
+    } else {
+
+        log ('Exchange ' + id.red + ' not found')
+        printSupportedExchanges ()
+    }
+}
+
+;(async function main () {
+
+    if (process.argv.length > 3) {
+
+        const id = process.argv[2]
+        const symbol = process.argv[3].toUpperCase ()
+        const rateLimit = process.argv[4] ? parseInt (process.argv[4]) : undefined
+        await printTicker (id, symbol, rateLimit)
+
+    } else {
+
+        printUsage ()
+    }
+
+    process.exit ()
+
+}) ()