| 1 | /** |
| 2 | * Copyright (c) Meta Platforms, Inc. and affiliates. |
| 3 | * |
| 4 | * This source code is licensed under the MIT license found in the |
| 5 | * LICENSE file in the root directory of this source tree. |
| 6 | * |
| 7 | * @flow |
| 8 | */ |
| 9 | |
| 10 | // Do not add / import anything to this file. |
| 11 | // This function could be used from multiple places, including hook. |
| 12 | |
| 13 | // Skips CSS and object arguments, inlines other in the first argument as a template string |
| 14 | export default function formatConsoleArguments( |
| 15 | maybeMessage: any, |
| 16 | ...inputArgs: $ReadOnlyArray<any> |
| 17 | ): $ReadOnlyArray<any> { |
| 18 | if (inputArgs.length === 0 || typeof maybeMessage !== 'string') { |
| 19 | return [maybeMessage, ...inputArgs]; |
| 20 | } |
| 21 | |
| 22 | const args = inputArgs.slice(); |
| 23 | |
| 24 | let template = ''; |
| 25 | let argumentsPointer = 0; |
| 26 | for (let i = 0; i < maybeMessage.length; ++i) { |
| 27 | const currentChar = maybeMessage[i]; |
| 28 | if (currentChar !== '%') { |
| 29 | template += currentChar; |
| 30 | continue; |
| 31 | } |
| 32 | |
| 33 | const nextChar = maybeMessage[i + 1]; |
| 34 | ++i; |
| 35 | |
| 36 | // Only keep CSS and objects, inline other arguments |
| 37 | switch (nextChar) { |
| 38 | case 'c': |
| 39 | case 'O': |
| 40 | case 'o': { |
| 41 | ++argumentsPointer; |
| 42 | template += `%${nextChar}`; |
| 43 | |
| 44 | break; |
| 45 | } |
| 46 | case 'd': |
| 47 | case 'i': { |
| 48 | if (argumentsPointer >= args.length) { |
| 49 | // No argument left for this specifier. Keep it as a literal, like |
| 50 | // the browser console does, rather than emitting 'NaN'. |
| 51 | template += `%${nextChar}`; |
| 52 | break; |
| 53 | } |
| 54 | const [arg] = args.splice(argumentsPointer, 1); |
| 55 | template += parseInt(arg, 10).toString(); |
| 56 | |
| 57 | break; |
| 58 | } |
| 59 | case 'f': { |
| 60 | if (argumentsPointer >= args.length) { |
| 61 | // No argument left for this specifier. Keep it as a literal, like |
| 62 | // the browser console does, rather than emitting 'NaN'. |
| 63 | template += `%${nextChar}`; |
| 64 | break; |
| 65 | } |
| 66 | const [arg] = args.splice(argumentsPointer, 1); |
| 67 | template += parseFloat(arg).toString(); |
| 68 | |
| 69 | break; |
| 70 | } |
| 71 | case 's': { |
| 72 | if (argumentsPointer >= args.length) { |
| 73 | // No argument left for this specifier. Keep it as a literal, like |
| 74 | // the browser console does, rather than emitting 'undefined'. |
| 75 | template += `%${nextChar}`; |
| 76 | break; |
| 77 | } |
| 78 | const [arg] = args.splice(argumentsPointer, 1); |
| 79 | template += String(arg); |
| 80 | |
| 81 | break; |
| 82 | } |
| 83 | |
| 84 | default: |
| 85 | if (nextChar === undefined) { |
| 86 | // A trailing '%' with no following character. Keep it as a literal |
| 87 | // '%' rather than emitting the string 'undefined'. |
| 88 | template += '%'; |
| 89 | } else { |
| 90 | template += `%${nextChar}`; |
| 91 | } |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | return [template, ...args]; |
| 96 | } |