Allow loging js execution errors

packages/string-templates/src/helpers/javascript.js

@@ -8,6 +8,9 @@ const { getJsHelperList } = require("./list")
 let runJS
 module.exports.setJSRunner = runner => (runJS = runner)
 
+let onErrorLog
+module.exports.setOnErrorLog = delegate => (onErrorLog = delegate)
+
 // Helper utility to strip square brackets from a value
 const removeSquareBrackets = value => {
   if (!value || typeof value !== "string") {
@@ -56,6 +59,8 @@ module.exports.processJS = (handlebars, context) => {
     const res = { data: runJS(js, sandboxContext) }
     return `{{${LITERAL_MARKER} js_result-${JSON.stringify(res)}}}`
   } catch (error) {
+    onErrorLog && onErrorLog(error)
+
     if (error.code === "ERR_SCRIPT_EXECUTION_TIMEOUT") {
       return "Timed out while executing JS"
     }

packages/string-templates/src/index.js

@@ -365,6 +365,7 @@ module.exports.doesContainString = (template, string) => {
 }
 
 module.exports.setJSRunner = javascript.setJSRunner
+module.exports.setOnErrorLog = javascript.setOnErrorLog
 
 module.exports.convertToJS = hbs => {
   const blocks = exports.findHBSBlocks(hbs)

packages/string-templates/src/index.mjs

@@ -20,6 +20,7 @@ export const disableEscaping = templates.disableEscaping
 export const findHBSBlocks = templates.findHBSBlocks
 export const convertToJS = templates.convertToJS
 export const setJSRunner = templates.setJSRunner
+export const setOnErrorLog = templates.setOnErrorLog
 export const FIND_ANY_HBS_REGEX = templates.FIND_ANY_HBS_REGEX
 export const helpersToRemoveForJs = templates.helpersToRemoveForJs