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feat: DEFAULT_TOKEN_LIMIT env #543

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feat: DEFAULT_TOKEN_LIMIT env #543

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34 changes: 33 additions & 1 deletion packages/core/src/core/tokenLimits.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,39 @@
type Model = string;
type TokenCount = number;

export const DEFAULT_TOKEN_LIMIT = 1_048_576;
function parseTokenLimit(value: string | undefined): TokenCount {
if (!value) {
return 1_048_576; // Default if env var is not set
}

const normalizedValue = value.toLowerCase().trim();
const multiplierMatch = normalizedValue.match(/^(\d+)([km])$/);
let numericValue;
let multiplier = 1;

if (multiplierMatch) {
numericValue = parseInt(multiplierMatch[1], 10);
const suffix = multiplierMatch[2];
if (suffix === 'k') {
multiplier = 1024;
} else if (suffix === 'm') {
multiplier = 1024 * 1024;
}
} else {
numericValue = parseInt(normalizedValue, 10);
}

if (isNaN(numericValue)) {
// Fallback to default if parsing fails
return 1_048_576;
}

return numericValue * multiplier;
}

export const DEFAULT_TOKEN_LIMIT: TokenCount = parseTokenLimit(
process.env['DEFAULT_TOKEN_LIMIT'],
);

export function tokenLimit(model: Model): TokenCount {
// Add other models as they become relevant or if specified by config
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