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constantinople

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Comparing version 4.0.0 to 4.0.1

4

lib/index.js

@@ -85,2 +85,6 @@ "use strict";

else {
if (!b.isExpression(expression.callee)) {
constant = false;
return;
}
var callee = toConstant(expression.callee);

@@ -87,0 +91,0 @@ if (!constant)

13

package.json
{
"name": "constantinople",
"version": "4.0.0",
"version": "4.0.1",
"main": "lib/index.js",

@@ -13,4 +13,4 @@ "types": "lib/index.d.ts",

"dependencies": {
"@babel/types": "^7.6.1",
"@babel/parser": "^7.6.0"
"@babel/parser": "^7.6.0",
"@babel/types": "^7.6.1"
},

@@ -20,2 +20,3 @@ "devDependencies": {

"mocha": "*",
"prettier": "^1.18.2",
"typescript": "^2.7.1"

@@ -26,4 +27,6 @@ },

"build": "tsc",
"pretest": "npm run build",
"test": "mocha -R spec"
"pretest": "npm run build && npm run prettier:check",
"test": "mocha -R spec",
"prettier:write": "prettier --ignore-path .gitignore --write './**/*.{md,json,yaml,js,jsx,ts,tsx}'",
"prettier:check": "echo \"If prettier fails you can fix it by running npm run prettier:write\" && prettier --ignore-path .gitignore --list-different './**/*.{md,json,yaml,js,jsx,ts,tsx}'"
},

@@ -30,0 +33,0 @@ "repository": {

# constantinople
Determine whether a JavaScript expression evaluates to a constant (using Babylon). Here it is assumed to be safe to underestimate how constant something is.
Determine whether a JavaScript expression evaluates to a constant (using Babylon). Here it is assumed to be safe to underestimate how constant something is.

@@ -16,9 +16,9 @@ [![Build Status](https://img.shields.io/travis/pugjs/constantinople/master.svg)](https://travis-ci.org/pugjs/constantinople)

```js
var isConstant = require('constantinople')
var isConstant = require('constantinople');
if (isConstant('"foo" + 5')) {
console.dir(isConstant.toConstant('"foo" + 5'))
console.dir(isConstant.toConstant('"foo" + 5'));
}
if (isConstant('Math.floor(10.5)', {Math: Math})) {
console.dir(isConstant.toConstant('Math.floor(10.5)', {Math: Math}))
console.dir(isConstant.toConstant('Math.floor(10.5)', {Math: Math}));
}

@@ -31,5 +31,5 @@ ```

Returns `true` if `src` evaluates to a constant, `false` otherwise. It will also return `false` if there is a syntax error, which makes it safe to use on potentially ES6 code.
Returns `true` if `src` evaluates to a constant, `false` otherwise. It will also return `false` if there is a syntax error, which makes it safe to use on potentially ES6 code.
Constants is an object mapping strings to values, where those values should be treated as constants. Note that this makes it a pretty bad idea to have `Math` in there if the user might make use of `Math.random` and a pretty bad idea to have `Date` in there.
Constants is an object mapping strings to values, where those values should be treated as constants. Note that this makes it a pretty bad idea to have `Math` in there if the user might make use of `Math.random` and a pretty bad idea to have `Date` in there.

@@ -40,5 +40,5 @@ Options are directly passed-through to [Babylon](https://github.com/babel/babylon#options).

Returns the value resulting from evaluating `src`. This method throws an error if the expression is not constant. e.g. `toConstant("Math.random()")` would throw an error.
Returns the value resulting from evaluating `src`. This method throws an error if the expression is not constant. e.g. `toConstant("Math.random()")` would throw an error.
Constants is an object mapping strings to values, where those values should be treated as constants. Note that this makes it a pretty bad idea to have `Math` in there if the user might make use of `Math.random` and a pretty bad idea to have `Date` in there.
Constants is an object mapping strings to values, where those values should be treated as constants. Note that this makes it a pretty bad idea to have `Math` in there if the user might make use of `Math.random` and a pretty bad idea to have `Date` in there.

@@ -49,2 +49,2 @@ Options are directly passed-through to [Babylon](https://github.com/babel/babylon#options).

MIT
MIT

@@ -19,3 +19,3 @@ import {parseExpression, ParserOptions} from '@babel/parser';

let constant = true;
function toConstant(expression: b.CallExpression['callee']): any {
function toConstant(expression: b.Expression): any {
if (!constant) return;

@@ -76,4 +76,4 @@ if (b.isArrayExpression(expression)) {

: b.isIdentifier(expression.callee.property)
? expression.callee.property.name
: undefined;
? expression.callee.property.name
: undefined;
if (member === undefined && !expression.callee.computed) {

@@ -87,2 +87,6 @@ constant = false;

} else {
if (!b.isExpression(expression.callee)) {
constant = false;
return;
}
const callee = toConstant(expression.callee);

@@ -126,4 +130,4 @@ if (!constant) return;

: b.isIdentifier(expression.property)
? expression.property.name
: undefined;
? expression.property.name
: undefined;
if (member === undefined && !expression.computed) {

@@ -155,6 +159,6 @@ constant = false;

: b.isIdentifier(property.key)
? property.key.name
: b.isStringLiteral(property.key)
? property.key.value
: undefined;
? property.key.name
: b.isStringLiteral(property.key)
? property.key.value
: undefined;
if (!key || key[0] === '_') {

@@ -161,0 +165,0 @@ constant = false;

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