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node_modules/n8n-workflow/dist/esm/extensions/expression-parser.js

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+const OPEN_BRACKET = /(?<escape>\\|)(?<brackets>\{\{)/;
+const CLOSE_BRACKET = /(?<escape>\\|)(?<brackets>\}\})/;
+export const escapeCode = (text) => {
+    return text.replace('\\}}', '}}');
+};
+export const splitExpression = (expression) => {
+    const chunks = [];
+    let searchingFor = 'open';
+    let activeRegex = OPEN_BRACKET;
+    let buffer = '';
+    let index = 0;
+    while (index < expression.length) {
+        const expr = expression.slice(index);
+        const res = activeRegex.exec(expr);
+        // No more brackets. If it's a closing bracket
+        // this is sort of valid so we accept it but mark
+        // that it has no closing bracket.
+        if (!res?.groups) {
+            buffer += expr;
+            if (searchingFor === 'open') {
+                chunks.push({
+                    type: 'text',
+                    text: buffer,
+                });
+            }
+            else {
+                chunks.push({
+                    type: 'code',
+                    text: escapeCode(buffer),
+                    hasClosingBrackets: false,
+                });
+            }
+            break;
+        }
+        if (res.groups.escape) {
+            buffer += expr.slice(0, res.index + 3);
+            index += res.index + 3;
+        }
+        else {
+            buffer += expr.slice(0, res.index);
+            if (searchingFor === 'open') {
+                chunks.push({
+                    type: 'text',
+                    text: buffer,
+                });
+                searchingFor = 'close';
+                activeRegex = CLOSE_BRACKET;
+            }
+            else {
+                chunks.push({
+                    type: 'code',
+                    text: escapeCode(buffer),
+                    hasClosingBrackets: true,
+                });
+                searchingFor = 'open';
+                activeRegex = OPEN_BRACKET;
+            }
+            index += res.index + 2;
+            buffer = '';
+        }
+    }
+    return chunks;
+};
+// Expressions only have closing brackets escaped
+const escapeTmplExpression = (part) => {
+    return part.replace('}}', '\\}}');
+};
+export const joinExpression = (parts) => {
+    return parts
+        .map((chunk) => {
+        if (chunk.type === 'code') {
+            return `{{${escapeTmplExpression(chunk.text)}${chunk.hasClosingBrackets ? '}}' : ''}`;
+        }
+        return chunk.text;
+    })
+        .join('');
+};
+//# sourceMappingURL=expression-parser.js.map