📄 `interpolate`¶

📊 Analysis Summary¶

Metric	Count
🔧 Functions	2
📦 Imports	1

📚 Table of Contents¶

Imports
Functions

🛠️ File Location:¶

📂 packages/rule-tester/src/utils/interpolate.ts

📦 Imports¶

Name	Source
`ReportDescriptorMessageData`	`@typescript-eslint/utils/ts-eslint`

Functions¶

`getPlaceholderMatcher(): RegExp`¶

Returns a global expression matching placeholders in messages.

Raw JSDoc

/**
 * Returns a global expression matching placeholders in messages.
 */

Code

export function getPlaceholderMatcher(): RegExp {
  return /\{\{([^{}]+)\}\}/gu;
}

`interpolate(text: string, data: ReportDescriptorMessageData | undefined): string`¶

Parameters:

text string
data ReportDescriptorMessageData | undefined

Returns: string

Calls:

getPlaceholderMatcher
text.replace
termWithWhitespace.trim
String

Internal Comments:

// Substitution content for any {{ }} markers.
// Preserve old behavior: If parameter name not provided, don't replace it.

Code

export function interpolate(
  text: string,
  data: ReportDescriptorMessageData | undefined,
): string {
  if (!data) {
    return text;
  }

  const matcher = getPlaceholderMatcher();

  // Substitution content for any {{ }} markers.
  return text.replace(matcher, (fullMatch, termWithWhitespace: string) => {
    const term = termWithWhitespace.trim();

    if (term in data) {
      return String(data[term]);
    }

    // Preserve old behavior: If parameter name not provided, don't replace it.
    return fullMatch;
  });
}

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📄 interpolate¶