tools: enable ESLint no-loss-of-precision rule

PR-URL: nodejs#41463
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>

.eslintrc.js

@@ -201,6 +201,7 @@ module.exports = {
     'no-invalid-regexp': 'error',
     'no-irregular-whitespace': 'error',
     'no-lonely-if': 'error',
+    'no-loss-of-precision': 'error',
     'no-misleading-character-class': 'error',
     'no-mixed-requires': 'error',
     'no-mixed-spaces-and-tabs': 'error',

test/js-native-api/test_number/test.js

@@ -19,10 +19,12 @@ testNumber(-1233);
 testNumber(986583);
 testNumber(-976675);
 
+/* eslint-disable no-loss-of-precision */
 testNumber(
   98765432213456789876546896323445679887645323232436587988766545658);
 testNumber(
   -4350987086545760976737453646576078997096876957864353245245769809);
+/* eslint-enable no-loss-of-precision */
 testNumber(Number.MIN_SAFE_INTEGER);
 testNumber(Number.MAX_SAFE_INTEGER);
 testNumber(Number.MAX_SAFE_INTEGER + 10);

test/parallel/test-buffer-readdouble.js

@@ -35,6 +35,7 @@ assert.strictEqual(buffer.readDoubleLE(0), 1.0000000000000004);
 buffer[0] = 1;
 buffer[6] = 0;
 buffer[7] = 0;
+// eslint-disable-next-line no-loss-of-precision
 assert.strictEqual(buffer.readDoubleBE(0), 7.291122019556398e-304);
 assert.strictEqual(buffer.readDoubleLE(0), 5e-324);
 

test/parallel/test-util-format.js

@@ -85,6 +85,7 @@ assert.strictEqual(
 
   assert.strictEqual(
     util.format(
+      // eslint-disable-next-line no-loss-of-precision
       '%d %s %i', 118059162071741130342, 118059162071741130342, 123_123_123),
     '118_059_162_071_741_140_000 118_059_162_071_741_140_000 123_123_123'
   );

test/parallel/test-util-inspect.js

@@ -3187,6 +3187,7 @@ assert.strictEqual(
   util.inspect.defaultOptions.numericSeparator = true;
 
   assert.strictEqual(
+    // eslint-disable-next-line no-loss-of-precision
     util.inspect(1234567891234567891234),
     '1.234567891234568e+21'
   );