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fix: do template substition after parsing prompt YAML #136

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fix: do template substition after parsing prompt YAML #136

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11 changes: 8 additions & 3 deletions dist/index.js
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2 changes: 1 addition & 1 deletion dist/index.js.map
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13 changes: 9 additions & 4 deletions src/prompt.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -101,11 +101,8 @@ export function loadPromptFile(filePath: string, templateVariables: TemplateVari

const fileContent = fs.readFileSync(filePath, 'utf-8')

// Apply template variable substitution
const processedContent = replaceTemplateVariables(fileContent, templateVariables)

try {
const config = yaml.load(processedContent) as PromptConfig
const config = yaml.load(fileContent) as PromptConfig

if (!config.messages || !Array.isArray(config.messages)) {
throw new Error('Prompt file must contain a "messages" array')
Expand All @@ -121,6 +118,14 @@ export function loadPromptFile(filePath: string, templateVariables: TemplateVari
}
}

// Prepare messages by replacing template variables with actual content
config.messages = config.messages.map(msg => {
return {
...msg,
content: replaceTemplateVariables(msg.content, templateVariables),
}
})

return config
} catch (error) {
throw new Error(`Failed to parse prompt file: ${error instanceof Error ? error.message : 'Unknown error'}`)
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