format.ts

src/lib/format.ts

1. // Money arrives as whole nano-dollars (1e-9 USD); tokens as integers.
2. import type { ModelInfo } from '../ipc/gen/ModelInfo'
3. import type { Prices } from '../ipc/gen/Prices'
5. export const NANO = 1e9
7. export function usd(nano: number): string {
8. if (nano === 0) return '$0'
9. const v = nano / NANO
10. if (v < 0.0001) return '<$0.0001'
11. if (v < 1) return `$${v.toFixed(4)}`
12. return `$${v.toFixed(2)}`
13. }
15. /** Price per million tokens: "$0.50", "$0.075", "free". */
16. export function perMillion(p: number): string {
17. if (p === 0) return 'free'
18. if (p >= 1) return `$${p.toFixed(2)}`
19. const s = p.toFixed(3)
20. return `$${s.endsWith('0') ? p.toFixed(2) : s}`
21. }
23. /** "free", or input and output per million tokens: "$0.09 / $0.55". */
24. export function priceLabel(p: Prices): string {
25. return p.input_per_m === 0 && p.output_per_m === 0
26. ? 'free'
27. : `${perMillion(p.input_per_m)} / ${perMillion(p.output_per_m)}`
28. }
30. /** Can the model read images? DeepInfra tags these `vision`, some also `vlm`. Mirrors `ModelInfo::vision` in Rust. */
31. export function isVision(m: ModelInfo): boolean {
32. return m.tags.includes('vision') || m.tags.includes('vlm')
33. }
35. /** File names Cortex treats as images; `IMAGE_EXTENSIONS` in attachments.rs is the Rust list. */
36. export const IMAGE_EXT = /\.(png|jpe?g|gif|webp)$/i
38. export function tokens(n: number): string {
39. if (n < 1000) return String(n)
40. if (n < 10_000) return `${(n / 1000).toFixed(1)}k`
41. if (n < 1_000_000) return `${Math.round(n / 1000)}k`
42. return `${(n / 1_000_000).toFixed(n < 10_000_000 ? 1 : 0)}M`
43. }
45. export function thousands(n: number): string {
46. return n.toLocaleString('en-US')
47. }
49. export function seconds(ms: number | null | undefined): string {
50. if (ms == null) return ''
51. return ms < 1000 ? `${ms} ms` : `${(ms / 1000).toFixed(1)} s`
52. }
54. export function relativeDay(ms: number, now = Date.now()): string {
55. const d = new Date(ms)
56. const today = new Date(now)
57. today.setHours(0, 0, 0, 0)
58. const diff = Math.floor(
59. (today.getTime() - new Date(d.getFullYear(), d.getMonth(), d.getDate()).getTime()) / 86_400_000,
60. )
61. if (diff <= 0) return 'Today'
62. if (diff === 1) return 'Yesterday'
63. if (diff < 7) return 'This week'
64. if (diff < 31) return 'This month'
65. return 'Earlier'
66. }
68. /** The short name of a model id: "Qwen/Qwen3-235B-A22B" -> "Qwen3-235B-A22B". */
69. export function shortModel(id: string): string {
70. const i = id.lastIndexOf('/')
71. return i >= 0 ? id.slice(i + 1) : id
72. }
74. /** Search snippets mark hits with \u0001 ... \u0002. */
75. export function snippetParts(s: string): { text: string; hit: boolean }[] {
76. const out: { text: string; hit: boolean }[] = []
77. const re = /\u0001([^\u0002]*)\u0002/g
78. let last = 0
79. for (let m = re.exec(s); m; m = re.exec(s)) {
80. if (m.index > last) out.push({ text: s.slice(last, m.index), hit: false })
81. out.push({ text: m[1], hit: true })
82. last = m.index + m[0].length
83. }
84. if (last < s.length) out.push({ text: s.slice(last), hit: false })
85. return out
86. }